X and Y are two events. The probability of X or Y is 0.7 and that of X is 0.4. If X and Y are independent, find the probability of Y.

A man wishes to keep his money in a savings deposit at 25% compound interest so that after three years he can buy a car for ₦150,000. How much does he need t...

Simplify 3(2n+1) - 4(2n-1) 2n+1 - 2n

Evaluate (2.813 x 10-3 x 1.063) (5.637 x 10-2)

If the population of a town was 240,000 in January 1998 and it increased by 2% each year, what would be the population of the town in January, 2000?

If (2√3−√2)(√3+2√2)=m+n√6 ( 2 3 − 2 ) ( 3 + 2 2 ) = m + n 6 , find the values of m and n respectively.

If 31410 - 2567 = 340x, find x.

Let P = {1, 2, u, v, w, x}; Q = {2, 3, u, v, w, 5, 6, y} and R = {2, 3, 4, v, x, y}. Determine (P-Q) ? R

In a youth club with 94 members, 60 like modern music, and 50 like traditional music. The number of members who like both traditional and modern music is thr...