If ÷ means −, − means ×, × means +, + means ÷, what will come in place of the question mark (?)?
 77 ÷ 7 × 17 – 49 + 7 = ?

Which of the following numbers will replace the question mark (?) in the given series?

2, 4, 10, 28, ?, 244

Which of the following numbers will replace the question mark (?) in the given series?
 382, 322, 272, 232, 202, ?

Which of the following numbers will replace the question mark (?) in the given series?
 1724, 1716, 1689, 1625, 1500, ?

What is the value of 4² -3² + 6² – 5² + 8² + 7² +…………….92² – 91² ?

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 12 * 6 * 54 * 6 * 7 = 70

Identify the number that does NOT belong to the following series.
47, 51, 57, 65, 69, 76, 83 

Which number will come in place of question mark in the following number series?
4,7, 12, 21 , 38,?