Question
Find the difference between sum of digits of LCM and
HCF of 20, 50 and 100.Solution
20 = 2² × 5 50 = 2 × 5² And 100 = 2² × 5² So, HCF = 2 × 5 = 10 So, sum of digits of HCF = 1 + 0 = 1 And LCM = 2² × 5² = 100 And sum of digits of LCM = 1 + 0 + 0 = 1 So, required difference = 1 - 1 = 0 Hence, option a.

What value will come in place of (?) question mark in the given expression.
(864 ÷ 16) + (45 × 7) – 38 = ?
What will come in the place of question mark (?) in the given expression?
150% of (320 + 280) + 18 x 10 = ? + 500
Simplify the following questions:
(11) 8.5 × (121) 5.5 ÷ (1331) 5.5 = (11) ? Â
...- What will come in place of (?), in the given expression.
(84 ÷ 7) + (14 × 3) – (√81) = ? (560 ÷ 32) × (720 ÷ 48) = ?
2/9 of 5/8 of 3/25 of ? = 40
[564 + 32 of 18 × 9 ÷ 12 + 162 ] ÷ 4 = ?
What should come in place of (?) question mark in the given expression.
[60% of 350 + (2/7 of 210)] ÷ 5 = ?