Question
The average age of a family of 3 members is 36 years. If
the father’s age is 10 years more than the mother’s age, and the age of the son is 4 years less than the mother’s age, what is the age of the Son?Solution
Let the mother's age be x years. Father’s age = x + 10, Son’s age = x - 4. Let the daughter’s age be y years. The average age is given by (x + x + 10 + x - 4 ) / 3 = 36. 3x + 6 = 108 3x = 102 x = 34 Son’s age = x – 4 = 30 years. Hence, the Sonr’s age is 30 years. Correct answer: c) 30 years.
What will come in place of the question mark (?) in the following series?
1528, 1416, 1204, ?, 480, -32
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
96 89 ? 90 94 91
...What value should come in the place of (?) in the following number series?
19, 235, 260, 324, 333, ?
What will come in place of the question mark (?) in the following series?
305...
In each of the following number series, one term is missing. Find the missing term.
3, 5, 20, 24, 144, 150, ?
1029, 1030, 1039, 1064, ?, 1194
75, 80, 95, ?, 155, 200
What will come in place of the question mark (?) in the following series?
1515, 184, ?, 455, 967, 624
7 29 61 ? 211 349
...
