TCS Company Numerical Ability Geometry

Mean of three numbers is 10 times more than the least of the numbers and 15 times less than greatest of the three numbers is five. Find the sum of the three numbers.

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TCS Other Question

A number when successively divided by 1,5,8 leaves remainders 1,4,7resp. Find the respective remainders if the order of divisors be reversed. If F(n) = {x/x is a prime factor of n};

1. F(110) ∩ F(165)
(1) {5, 11} (2) {1, 5, 11} (3) {1, 2, 3, 5, 11} (4) {2, 3, 5, 11}

2. The least value of x when
F(x) ∪ F(15) = F(30)
(1) 2 (2) 0 (3) 1 (4) 30