Question
Find the wrong number in the given number series.
1, 3, 10, 21, 64, 129, 356, 777Solution
Clearly the series pattern is:Â Â x 2 + 1, x 3 + 1, x 2 + 1, x 3 + 1,..... So, 356 is wrong and must be replaced by (129 x 3 + 1) i.e. 388
√729 × 5 + 270 - 3 ÷ ∛27 + 4 × ? = 484
168Â Â Â Â Â 163Â Â Â Â Â Â 153Â Â Â Â Â Â 138Â Â Â Â Â 118Â Â Â Â Â ?
...What will come in the place of question mark (?) in the given expression?
65% of 900 - 45% of 600 = ? X 3Â
Simplify the following expressions and choose the correct option.
(72 ÷ 3) × (5/6) + 7² = ?
?% of 740 – 8% of 650 = 7.2
- Find the simplified value of the given expression.

What will come in the place of question mark (?) in the given expression?
{(2/15) + (12/25)} of 375 + 190 = ?% of 375
(3984 ÷ 24) x (5862 ÷ 40) = ?
What will come in the place of question mark (?) in the given expression?
(72 × 6 ÷ 12) × 6 = ?
What value should come in the place of (?) in the following questions?
√16 * ? = √144 + (18 * 4 ÷ 3)