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Frequently Asked Book Numerical Ability - Permutation and Combination Math Questions and Answer

(#M40152692) BOOK QUESTION averages Keep an EYE

in a class two students aged 16yrs and 18 yrs are replaced by two students whose age is 19yrs and 21 yrs.if the avearge age of the cls os increased by 3 months.?How many students are there in the class?

Asked In Book swathi choda (10 years ago)

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(#M40041154) BOOK QUESTION Permutation and Combination Keep an EYE

How many word of 11 letters would be formed with all the vowels present in even place using all the letters of the alphabet? (without repetitions)

A) 21P6 5! B) 21!

C) 21p5 D) 26P5

Asked In Book Mohit (11 years ago)

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(#M40151547) BOOK QUESTION Aptitude Keep an EYE

Q:- The number of values of r satisfying the equation 39C3r-1 -39Cr^2=39Cr^2 -1 -39C3r is
a)1
b)2
c)3
d)4

Asked In Book Alekhya Vakulabharanam (10 years ago)

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(#M40035575) BOOK QUESTION Permutationand Combination Keep an EYE

In how many ways 12 different books can be distributed equally among 4 persons?
(a)195
(b)154
(c)210
(d)256

Asked In Book indrajeet yadav (11 years ago)

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(#M40099573) BOOK QUESTION Permutation and combination Keep an EYE

How many 7 digit numbers are there having the digit 3 three times and the digit 0 four times.
Ans :15

Asked In Book ayushee singh (10 years ago)

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(#M40021291) BOOK QUESTION Keep an EYE

In how many ways can 10 books be arranged on a shelf such that a particular pair of books will never be together?

Asked In Book Abhishek (12 years ago)

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(#M40021165) BOOK QUESTION Keep an EYE

We have a 630 ml of mixture of milk and water in the ratio 7:2. How much water must be added to make the ratio 7:3?

Asked In Book Abhishek (12 years ago)

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(#M40153693) BOOK QUESTION math Keep an EYE

How many number of triangle are possible with perimeter 14 and all sides are integral ?

Asked In Book (10 years ago)

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(#M40036486) BOOK QUESTION number system Keep an EYE

Suppose you have 108 green marbles and 144 red marbles. You decide to separate them into packets of equal number of marbles. Find the maximum possible number of marbles in each packet.
(A) 12
(B) 36
(C) 9
(D) 24
(E) None of these

Asked In Book drashtant nanavati (11 years ago)

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(#M40154380) BOOK QUESTION speed distance and time Keep an EYE

An officer goes to his office on scooter at the speed of 40 km/hr but return from office to his home at 50 km/hr. If the travel time both ways is 40 mins,how far is his office from home.

Asked In Book rashmi mehra (9 years ago)

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