UPTET 2017 (Paper 2 - Maths & Science ) Previous Year Paper (2017)

In a religious gathering, the ratio of number of ladies to that of gents was 3 ∶ 2 When 20 more gents joined, the ratio was reversed. The number of ladies was

For three non-zero real numbers a, b, c if $\frac{a}{2}=\frac{b}{3}=\frac{c}{4}=\frac{2a-3b+5c}{k}$ then the value of k is

If A and B be any two sets such that A Δ B = A, then A ∩ B is