Question
A family includes father, mother, son and daughter. At
the time of father’s marriage, the mother was 7 years younger than her husband. Now, the mother’s age is three times the age of her son. The ratio of the present ages of the son and daughter is 6:5. The present age of the daughter is 15 years. Find the present age of the father.Solution
ATQ, Present age of daughter = 15 years Son : Daughter = 6 : 5 ⇒ Son’s age = 15 × 6/5 = 18 years Mother’s present age = 3 × 18 = 54 years Mother is 7 years younger than father ⇒ Father’s present age = 54 + 7 = 61 years
71, 79, 88, 152, ?, 393
1595, 1083, 740, 524, 399, ?Â
What value should come in the place of (?) in the following number series?
300, 421, 252, ?, 188, 549
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
 5, 6, 14, 45, 184, ? Â
124, 147, 176, 207, 244, ?
What value should come in place of (?) question mark in the following number series.
96, 48, 24, 12, 6, ?
Find the missing number, in the given number series.
6, 12, 36, ?, 720, 4320
78, 88, 100, 114, ?, 148