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Maths-

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Easy

Question

The position vector of the centre of the circle $vertical line r with rightwards arrow on top vertical line equals 5 comma r with rightwards arrow on top times left parenthesis i with ˆ on top plus j with ˆ on top plus k with rightwards arrow on top right parenthesis equals 3 square root of 3$

$\hat{i} + \vec{ȷ} + \hat{k}$
$3 (\hat{i} + \hat{j} + \vec{k})$
$\sqrt{3} (\hat{i} + \hat{j} + \vec{k})$
None of these

The correct answer is: $square root of 3 left parenthesis i with ˆ on top plus j with ˆ on top plus k with rightwards arrow on top right parenthesis$

Related Questions to study

The locus of midpoints of chords of which subtend a right angle at the centre is

The locus of midpoints of chords of which subtend a right angle at the centre is

𝐓𝐡𝐞𝐫𝐞 𝐚𝐫𝐞 𝐭𝐰𝐨 𝐔𝐫𝐧𝐬. 𝐔𝐫𝐧 𝐀 𝐡𝐚𝐬 𝟑 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐫𝐞𝐝 𝐛𝐚𝐥𝐥𝐬 𝐚𝐧𝐝 𝐮𝐫𝐧 𝐁 𝐡𝐚𝐬 𝟗 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐛𝐥𝐮𝐞 𝐛𝐚𝐥𝐥𝐬. 𝐅𝐫𝐨𝐦 𝐞𝐚𝐜𝐡 𝐮𝐫𝐧 𝐭𝐰𝐨 𝐛𝐚𝐥𝐥𝐬 𝐚𝐫𝐞 𝐭𝐚𝐤𝐞𝐧 𝐨𝐮𝐭 𝐚𝐭𝐫𝐚𝐧𝐝𝐨𝐦 𝐚𝐧𝐝 𝐭𝐡𝐞𝐧 𝐭𝐫𝐚𝐧𝐬𝐟𝐞𝐫𝐫𝐞𝐝 𝐭𝐨 𝐭𝐡𝐞 𝐨𝐭𝐡𝐞𝐫. 𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐭𝐡𝐢𝐬 𝐜𝐚𝐧 𝐛𝐞 𝐝𝐨𝐧𝐞 𝐢𝐬

𝐓𝐡𝐞𝐫𝐞 𝐚𝐫𝐞 𝐭𝐰𝐨 𝐔𝐫𝐧𝐬. 𝐔𝐫𝐧 𝐀 𝐡𝐚𝐬 𝟑 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐫𝐞𝐝 𝐛𝐚𝐥𝐥𝐬 𝐚𝐧𝐝 𝐮𝐫𝐧 𝐁 𝐡𝐚𝐬 𝟗 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐛𝐥𝐮𝐞 𝐛𝐚𝐥𝐥𝐬. 𝐅𝐫𝐨𝐦 𝐞𝐚𝐜𝐡 𝐮𝐫𝐧 𝐭𝐰𝐨 𝐛𝐚𝐥𝐥𝐬 𝐚𝐫𝐞 𝐭𝐚𝐤𝐞𝐧 𝐨𝐮𝐭 𝐚𝐭𝐫𝐚𝐧𝐝𝐨𝐦 𝐚𝐧𝐝 𝐭𝐡𝐞𝐧 𝐭𝐫𝐚𝐧𝐬𝐟𝐞𝐫𝐫𝐞𝐝 𝐭𝐨 𝐭𝐡𝐞 𝐨𝐭𝐡𝐞𝐫. 𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐭𝐡𝐢𝐬 𝐜𝐚𝐧 𝐛𝐞 𝐝𝐨𝐧𝐞 𝐢𝐬

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐩𝐞𝐫𝐦𝐮𝐭𝐚𝐭𝐢𝐨𝐧𝐬 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐥𝐞𝐭𝐭𝐞𝐫𝐬 𝐀 𝐭𝐨 𝐆 𝐬𝐨 𝐭𝐡𝐚𝐭 𝐧𝐞𝐢𝐭𝐡𝐞𝐫 𝐭𝐡𝐞 𝐬𝐞𝐭 𝐁𝐄𝐆 𝐧𝐨𝐫 𝐭𝐡𝐞 𝐬𝐞𝐭 𝐂𝐀𝐃 𝐚𝐩𝐩𝐞𝐚𝐫𝐬 𝐢𝐬

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐩𝐞𝐫𝐦𝐮𝐭𝐚𝐭𝐢𝐨𝐧𝐬 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐥𝐞𝐭𝐭𝐞𝐫𝐬 𝐀 𝐭𝐨 𝐆 𝐬𝐨 𝐭𝐡𝐚𝐭 𝐧𝐞𝐢𝐭𝐡𝐞𝐫 𝐭𝐡𝐞 𝐬𝐞𝐭 𝐁𝐄𝐆 𝐧𝐨𝐫 𝐭𝐡𝐞 𝐬𝐞𝐭 𝐂𝐀𝐃 𝐚𝐩𝐩𝐞𝐚𝐫𝐬 𝐢𝐬

parallel

$L t subscript left parenthesis x rightwards arrow 0 right parenthesis invisible function application x divided by left parenthesis √ left parenthesis x plus 4 right parenthesis minus 2 right parenthesis equals$

$L t subscript left parenthesis x rightwards arrow 0 right parenthesis invisible function application x divided by left parenthesis √ left parenthesis x plus 4 right parenthesis minus 2 right parenthesis equals$

A unit vector $stack a with rightwards arrow on top$ in the plane of $b with rightwards arrow on top equals 2 i with ˆ on top plus j with ˆ on top & c with rightwards arrow on top equals i with ˆ on top minus j with ˆ on top plus k with ˆ on top$ is such that $stack a with rightwards arrow on top stack b with rightwards arrow on top equals stack a with rightwards arrow on top stack b with rightwards arrow on top$ where $d with rightwards arrow on top equals j with ˆ on top plus 2 k with ˆ on top$ is

A unit vector $stack a with rightwards arrow on top$ in the plane of $b with rightwards arrow on top equals 2 i with ˆ on top plus j with ˆ on top & c with rightwards arrow on top equals i with ˆ on top minus j with ˆ on top plus k with ˆ on top$ is such that $stack a with rightwards arrow on top stack b with rightwards arrow on top equals stack a with rightwards arrow on top stack b with rightwards arrow on top$ where $d with rightwards arrow on top equals j with ˆ on top plus 2 k with ˆ on top$ is

If $a with rightwards arrow on top to the power of ´ equals i with ˆ on top plus j with ˆ on top comma b with rightwards arrow on top to the power of ´ equals i with ˆ on top plus j with ˆ on top plus 2 k with ˆ on top & c with rightwards arrow on top to the power of ´ equals 2 i with ˆ on top plus j with ˆ on top minus k with ˆ on top$ . Then altitude of the parallel piped formed by the vectors $stack a with rightwards arrow on top comma stack b with rightwards arrow on top comma stack c with rightwards arrow on top$ having base formed by $stack b with rightwards arrow on top & stack c with rightwards arrow on top$ is ( $stack a with rightwards arrow on top comma stack b with rightwards arrow on top comma stack c with rightwards arrow on top$ and $a with rightwards arrow on top to the power of blank comma b with rightwards arrow on top to the power of blank$ , $c with rightwards arrow on top to the power of blank$ are reciprocal system of vectors)

If $a with rightwards arrow on top to the power of ´ equals i with ˆ on top plus j with ˆ on top comma b with rightwards arrow on top to the power of ´ equals i with ˆ on top plus j with ˆ on top plus 2 k with ˆ on top & c with rightwards arrow on top to the power of ´ equals 2 i with ˆ on top plus j with ˆ on top minus k with ˆ on top$ . Then altitude of the parallel piped formed by the vectors $stack a with rightwards arrow on top comma stack b with rightwards arrow on top comma stack c with rightwards arrow on top$ having base formed by $stack b with rightwards arrow on top & stack c with rightwards arrow on top$ is ( $stack a with rightwards arrow on top comma stack b with rightwards arrow on top comma stack c with rightwards arrow on top$ and $a with rightwards arrow on top to the power of blank comma b with rightwards arrow on top to the power of blank$ , $c with rightwards arrow on top to the power of blank$ are reciprocal system of vectors)

parallel

The vector $i with minus on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times i with minus on top right parenthesis right square bracket plus j with ‾ on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times j with ‾ on top right square bracket plus k with ‾ on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times k with ‾ on top right square bracket$ equals

The vector $i with minus on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times i with minus on top right parenthesis right square bracket plus j with ‾ on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times j with ‾ on top right square bracket plus k with ‾ on top cross times left square bracket left parenthesis a with ‾ on top cross times b with ‾ on top right parenthesis cross times k with ‾ on top right square bracket$ equals

$O A B C$ is a tetrahedron in which $O$ is the origin and position vector of points A,B,C are $i with ˆ on top plus 2 j plus 3 k with ˆ on top comma 2 i plus a j plus k with ˆ on top$ and $i with ˆ on top plus 3 j with ˆ on top plus 2 k with ˆ on top$ respectively. A value of a for which shortest distance between $O A$ and $B C$ is $square root of fraction numerator 3 over denominator 2 end fraction end root$

$O A B C$ is a tetrahedron in which $O$ is the origin and position vector of points A,B,C are $i with ˆ on top plus 2 j plus 3 k with ˆ on top comma 2 i plus a j plus k with ˆ on top$ and $i with ˆ on top plus 3 j with ˆ on top plus 2 k with ˆ on top$ respectively. A value of a for which shortest distance between $O A$ and $B C$ is $square root of fraction numerator 3 over denominator 2 end fraction end root$

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐭𝐡𝐞 𝐟𝐨𝐮𝐫 𝐟𝐚𝐜𝐞𝐬 𝐨𝐟 𝐚 𝐫𝐞𝐠𝐮𝐥𝐚𝐫 𝐭𝐞𝐭𝐫𝐚𝐡𝐞𝐝𝐫𝐨𝐧 𝐜𝐚𝐧 𝐛𝐞 𝐩𝐚𝐢𝐧𝐭𝐞𝐝 𝐰𝐢𝐭𝐡 𝐟𝐨𝐮𝐫 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 𝐜𝐨𝐥𝐨𝐮𝐫𝐬 𝐢𝐬

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐭𝐡𝐞 𝐟𝐨𝐮𝐫 𝐟𝐚𝐜𝐞𝐬 𝐨𝐟 𝐚 𝐫𝐞𝐠𝐮𝐥𝐚𝐫 𝐭𝐞𝐭𝐫𝐚𝐡𝐞𝐝𝐫𝐨𝐧 𝐜𝐚𝐧 𝐛𝐞 𝐩𝐚𝐢𝐧𝐭𝐞𝐝 𝐰𝐢𝐭𝐡 𝐟𝐨𝐮𝐫 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 𝐜𝐨𝐥𝐨𝐮𝐫𝐬 𝐢𝐬

parallel

T𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝟓 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥 𝐛𝐚𝐥𝐥𝐬 𝐜𝐚𝐧 𝐛𝐞 𝐤𝐞𝐩𝐭 𝐢𝐧 𝟏𝟎 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥 𝐛𝐨𝐱𝐞𝐬, 𝐢𝐟 𝐧𝐨𝐭 𝐦𝐨𝐫𝐞 𝐭𝐡𝐚𝐧 𝐨𝐧𝐞 𝐜𝐚𝐧 𝐠𝐨 𝐢𝐧𝐭𝐨 𝐚 𝐛𝐨𝐱, 𝐢𝐬

T𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝟓 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥 𝐛𝐚𝐥𝐥𝐬 𝐜𝐚𝐧 𝐛𝐞 𝐤𝐞𝐩𝐭 𝐢𝐧 𝟏𝟎 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥 𝐛𝐨𝐱𝐞𝐬, 𝐢𝐟 𝐧𝐨𝐭 𝐦𝐨𝐫𝐞 𝐭𝐡𝐚𝐧 𝐨𝐧𝐞 𝐜𝐚𝐧 𝐠𝐨 𝐢𝐧𝐭𝐨 𝐚 𝐛𝐨𝐱, 𝐢𝐬

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐭𝐨 𝐟𝐢𝐥𝐥 𝐞𝐚𝐜𝐡 𝐨𝐟 𝐭𝐡𝐞 𝐟𝐨𝐮𝐫 𝐜𝐞𝐥𝐥𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐭𝐚𝐛𝐥𝐞 𝐰𝐢𝐭𝐡 𝐚 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐧𝐚𝐭𝐮𝐫𝐚𝐥 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐬𝐮𝐜𝐡 𝐭𝐡𝐚𝐭 𝐭𝐡𝐞 𝐬𝐮𝐦 𝐨𝐟 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐢𝐬 𝟏𝟎 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐬𝐮𝐦𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐩𝐥𝐚𝐜𝐞𝐝 𝐝𝐢𝐚𝐠𝐨𝐧𝐚𝐥𝐥𝐲 𝐚𝐫𝐞 𝐞𝐪𝐮𝐚𝐥 𝐢𝐬

𝐓𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐭𝐨 𝐟𝐢𝐥𝐥 𝐞𝐚𝐜𝐡 𝐨𝐟 𝐭𝐡𝐞 𝐟𝐨𝐮𝐫 𝐜𝐞𝐥𝐥𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐭𝐚𝐛𝐥𝐞 𝐰𝐢𝐭𝐡 𝐚 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭 𝐧𝐚𝐭𝐮𝐫𝐚𝐥 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐬𝐮𝐜𝐡 𝐭𝐡𝐚𝐭 𝐭𝐡𝐞 𝐬𝐮𝐦 𝐨𝐟 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐢𝐬 𝟏𝟎 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐬𝐮𝐦𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫𝐬 𝐩𝐥𝐚𝐜𝐞𝐝 𝐝𝐢𝐚𝐠𝐨𝐧𝐚𝐥𝐥𝐲 𝐚𝐫𝐞 𝐞𝐪𝐮𝐚𝐥 𝐢𝐬

𝐒𝐢𝐱 𝐱′ 𝐬 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐛𝐞 𝐩𝐥𝐚𝐜𝐞𝐝 𝐢𝐧 𝐭𝐡𝐞 𝐬𝐪𝐮𝐚𝐫𝐞 𝐨𝐟 𝐠𝐢𝐯𝐞𝐧 𝐟𝐢𝐠𝐮𝐫𝐞 𝐬𝐮𝐜𝐡 𝐭𝐡𝐚𝐭 𝐞𝐚𝐜𝐡 𝐫𝐨𝐰 𝐜𝐨𝐧𝐭𝐚𝐢𝐧𝐬 𝐚𝐭𝐥𝐞𝐚𝐬𝐭 𝐨𝐧𝐞 𝐱. 𝐓𝐡𝐞𝐧 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐝𝐨𝐢𝐧𝐠 𝐬𝐨 𝐚𝐫𝐞

𝐒𝐢𝐱 𝐱′ 𝐬 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐛𝐞 𝐩𝐥𝐚𝐜𝐞𝐝 𝐢𝐧 𝐭𝐡𝐞 𝐬𝐪𝐮𝐚𝐫𝐞 𝐨𝐟 𝐠𝐢𝐯𝐞𝐧 𝐟𝐢𝐠𝐮𝐫𝐞 𝐬𝐮𝐜𝐡 𝐭𝐡𝐚𝐭 𝐞𝐚𝐜𝐡 𝐫𝐨𝐰 𝐜𝐨𝐧𝐭𝐚𝐢𝐧𝐬 𝐚𝐭𝐥𝐞𝐚𝐬𝐭 𝐨𝐧𝐞 𝐱. 𝐓𝐡𝐞𝐧 𝐭𝐡𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐰𝐚𝐲𝐬 𝐝𝐨𝐢𝐧𝐠 𝐬𝐨 𝐚𝐫𝐞

parallel

The number of positive integral solutions of $x subscript 1 end subscript plus x subscript 2 end subscript plus x subscript 3 end subscript less than n$ where n is positive integer, is

The number of positive integral solutions of $x subscript 1 end subscript plus x subscript 2 end subscript plus x subscript 3 end subscript less than n$ where n is positive integer, is

f𝐨𝐮𝐫 𝐛𝐨𝐲𝐬 𝐩𝐢𝐜𝐤𝐞𝐝 𝐮𝐩 𝟑𝟎 𝐦𝐚𝐧𝐠𝐨𝐞𝐬. 𝐈𝐧 𝐡𝐨𝐰 𝐦𝐚𝐧𝐲 𝐰𝐚𝐲𝐬 𝐜𝐚𝐧 𝐭𝐡𝐞𝐲 𝐝𝐢𝐯𝐢𝐝𝐞 𝐭𝐡𝐞𝐦, 𝐢𝐟 𝐚𝐥𝐥 𝐦𝐚𝐧𝐠𝐨𝐞𝐬 𝐛𝐞 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥

f𝐨𝐮𝐫 𝐛𝐨𝐲𝐬 𝐩𝐢𝐜𝐤𝐞𝐝 𝐮𝐩 𝟑𝟎 𝐦𝐚𝐧𝐠𝐨𝐞𝐬. 𝐈𝐧 𝐡𝐨𝐰 𝐦𝐚𝐧𝐲 𝐰𝐚𝐲𝐬 𝐜𝐚𝐧 𝐭𝐡𝐞𝐲 𝐝𝐢𝐯𝐢𝐝𝐞 𝐭𝐡𝐞𝐦, 𝐢𝐟 𝐚𝐥𝐥 𝐦𝐚𝐧𝐠𝐨𝐞𝐬 𝐛𝐞 𝐢𝐝𝐞𝐧𝐭𝐢𝐜𝐚𝐥

$L t subscript left parenthesis x rightwards arrow 0 right parenthesis invisible function application left parenthesis ∛ left parenthesis 1 plus x right parenthesis minus ∛ left parenthesis 1 minus x right parenthesis right parenthesis divided by x equals$

$L t subscript left parenthesis x rightwards arrow 0 right parenthesis invisible function application left parenthesis ∛ left parenthesis 1 plus x right parenthesis minus ∛ left parenthesis 1 minus x right parenthesis right parenthesis divided by x equals$

parallel

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