HCFC-141 b is one of the most powerful ozone-depleting

Solve the equation:sin(x) + cos(x) = 2·sin(x + α). Then the value of α is:

If A and B are both symmetric matrices of the same order, then which of the following is necessarily skew-symmetric?

In triangle ABC, if the sides are a = 13 cm, b = 14 cm, and c = 15 cm, find the circumradius (R).

What is the mean of the following data given below:

3,7,9,5,11,13,8,12,15,12,4

What will be come in place of (?) in the given number series.

7, 11, 15, 19, ?, 27

A and B together can complete a work in 12 days. B alone can complete the same work in 30 days. In how many days will A alone complete the work?

Sum of the present ages of A, B, C and D is 64 years. After 4 years ratio of their ages is 6:5:3:2. What is C’s present age?

Aman bought 21 notebooks for Rs.1250 from shop A and 12 notebooks for Rs.895 from shop B. What is the average price he paid per book?