Question
LCM and HCF of two numbers are respectively 3 and 18. If
one of them is 9, find the other number.Solution
ATQ, we can say that Let the first number be 'a' and second number be 'b'. LCM × HCF = a × b 18 × 3 = 9 × b 54 = 9 × b b = 6 ∴ The second number is 6.
What will come in the place of questions (?) mark in the following questions.
160, 223, 271, 306, 330, ?
In each of the following number series, one term is missing. Find the missing term.
2, 6, 18, 54, 162, ?
2, 2, 6, 30, ?, 1890
10, 15, 25, 35, ?, 65
114, 156, ?, 238, 274, 304
144, 288, 96, 384, 76.8, ?Â
What will come in place of the question mark (?) in the following series?
40, 25, 30, 50, 105, ?
124, 107, 91, ? , 62, 49
18, 37, 60, ?, 120, 157
?, 6, 6, 9, 18, 45