Maths-
General
Easy

Question

Five persons entered the lift cabin on the ground floor of an 8-floor house. Suppose each of them can leave the cabin independently at any floor beginning with the first. Find the total number of ways in which each of the five persons can leave the cabin
i) at any one of the 7 floors

  1. 57  
  2. 75  
  3. 76  
  4. 56  

The correct answer is: 75

Related Questions to study

General
Maths-

If N = 7p+4.5q.23 is a perfect cube, where 'p' and 'q' are positive integers, the smallest possible value of 'p + q' is-

If N = 7p+4.5q.23 is a perfect cube, where 'p' and 'q' are positive integers, the smallest possible value of 'p + q' is-

Maths-General
General
Maths-

For 3  r  n nCr + 3 nCr–1 + 3 nCr–2 + nCr–3 is-

For 3  r  n nCr + 3 nCr–1 + 3 nCr–2 + nCr–3 is-

Maths-General
General
Maths-

The number of different words of three letters which can be formed from the word "PROPOSAL", if a vowel is always in the middle are-

The number of different words of three letters which can be formed from the word "PROPOSAL", if a vowel is always in the middle are-

Maths-General
parallel
General
Maths-

The total number of positive integral solution of abc = 24 is

The total number of positive integral solution of abc = 24 is

Maths-General
General
Maths-

Four couples (husband and wife) decide to form a committee of four members. The number of different committees that can be formed in which no couple finds a place is

Four couples (husband and wife) decide to form a committee of four members. The number of different committees that can be formed in which no couple finds a place is

Maths-General
General
Maths-

The total number of ways in which n2 number of identical balls cane be put in n numbered boxed (1, 2, 3, ……n) such that ith box contains at least i number of balls, is -

The total number of ways in which n2 number of identical balls cane be put in n numbered boxed (1, 2, 3, ……n) such that ith box contains at least i number of balls, is -

Maths-General
parallel
General
Maths-

A person writes letters to 6 friends and addresses the corresponding envelopes. In how many ways can the letters be placed in the envelopes so that at least 4 of them are in wrong envelopes ?

A person writes letters to 6 friends and addresses the corresponding envelopes. In how many ways can the letters be placed in the envelopes so that at least 4 of them are in wrong envelopes ?

Maths-General
General
Maths-

Sum of all divisors of 5400 whose unit digit is 0, is -

Sum of all divisors of 5400 whose unit digit is 0, is -

Maths-General
General
Maths-

The sum of the factors of 8! which are odd and are of the form (3m + 2) where m N is -

The sum of the factors of 8! which are odd and are of the form (3m + 2) where m N is -

Maths-General
parallel
General
General

In spermatogenesis, reduction division of chromosomes occurs during conversion of

In spermatogenesis, reduction division of chromosomes occurs during conversion of

GeneralGeneral
General
General

Number of autosomes in human primary spermatocyte is

Number of autosomes in human primary spermatocyte is

GeneralGeneral
General
General

Spermatogenesis starts at the age of puberty due to significant increase in the secretion of

Spermatogenesis starts at the age of puberty due to significant increase in the secretion of

GeneralGeneral
parallel
General
Biology

Evolution that shift the allele frequency in a study consistent direction is called?

Evolution that shift the allele frequency in a study consistent direction is called?

BiologyGeneral
General
Biology

Vestigial organs present in an adult individual are examples of …………. Basis of evidence of evolution.

Vestigial organs present in an adult individual are examples of …………. Basis of evidence of evolution.

BiologyGeneral
General
Biology

Wings of birds and wings of flies perform similar functions so they are examples of

Wings of birds and wings of flies perform similar functions so they are examples of

BiologyGeneral
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.