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Maths-

General

Easy

Question

The number of different triangles formed by joining the points A, B, C, D, E, F and G as shown in the figure given below is

20
24
25
30

The correct answer is: 24

No. of different triangles $equals$ $7 subscript C subscript 3 end subscript end subscript minus 5 subscript C subscript 3 end subscript end subscript minus 3 subscript C subscript 3 end subscript end subscript equals 24$

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The number of ways that the letters of the word ”PERSON” can be placed in the squares of the adjoining figure so that no row remains empty

The value of $open vertical bar table row cell 1 to the power of 2 end exponent end cell cell 2 to the power of 2 end exponent end cell cell 3 to the power of 2 end exponent end cell row cell 2 to the power of 2 end exponent end cell cell 3 to the power of 2 end exponent end cell cell 4 to the power of 2 end exponent end cell row cell 3 to the power of 2 end exponent end cell cell 4 to the power of 2 end exponent end cell cell 5 to the power of 2 end exponent end cell end table close vertical bar$ is

The value of $open vertical bar table row cell 1 to the power of 2 end exponent end cell cell 2 to the power of 2 end exponent end cell cell 3 to the power of 2 end exponent end cell row cell 2 to the power of 2 end exponent end cell cell 3 to the power of 2 end exponent end cell cell 4 to the power of 2 end exponent end cell row cell 3 to the power of 2 end exponent end cell cell 4 to the power of 2 end exponent end cell cell 5 to the power of 2 end exponent end cell end table close vertical bar$ is

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chemistry-General

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i)
ii)
iii)

iv)

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i)
ii)
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