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Find the number of ways of seating 4 people on 11 chairs such that no two people are sitting on adjacent chair?

what is the meaning for a*b

3 boxes contains 10 fruits each.If the number of mangoes in the 3 boxes is 4,5,6 respectively.find the probability that a fruit picked at random from one of the boxes is mango?

out of three numbers ,first number is twice the second and half of the third number . If the average of all the three number is 56 , what is the difference between the first and second number?

Please explain Question 3 here : https://cracku.in/banking/quotient/sbi-clerk-2016-free-Quant-test-180

How do we solve pass jumb

How to solve inequality

suggest some basic materials to cover prob and permutations

How to solve RC

how to learn vocabulary and easy to remember