In the following series find the missing numbers.
21, 26, 33, 42, 53,?

Kanna is taller than Malik. Dev is shorter than Krish where as Krish is taller than Malik. Veena is shorter than Krish but taller than Malik and Dev is taller than Veena. Who is the Shortest ? 

Complete the following alphabet series.
ABC, PQR, DEF, STU, ?

Calendar of 1991 could be used again? 

The following equation is incorrect. Which two signs should be interchanged to correct the equation?
12 + 10 - 28 ÷ 7 x 4 = 48

If ‘+’ stands for division, ÷ stands for multiplication, multiplication stands for addition; then which one of the following equation is correct?

In the given figure, how many wooden plates are there?

What will be the next number in the given series ?
3, 28, 4, 65, 5, 126, 6, ______?