711 What is the angle between the hour and minute hand of a clock at 4:20?
Explanation
- Using formula
- 30H - 5.5M
- H=4, M=20
- 120 - 110
- = 10°
Last verified on 25-09-2026
General Knowledge MCQs
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712 The ratio of ages of A and B is 3:4. After 5 years, the ratio becomes 4:5. Find A’s present age.
Explanation
- Let ages be 3k and 4k
- After 5 years: (3k+5)/(4k+5) = 4/5
- 15k + 25 = 16k + 20
- k = 5
- A's age = 3 x 5 = 15 years
Last verified on 25-09-2026
713 A father told his son, “I was as old as you are now at the time of your birth.” If the father’s present age is 38 years, find the son’s age 5 years ago.
Explanation
- Let son's present age = s
- Father's age at son's birth = 38 - s
- Given: 38 - s = s
- 38 = 2s => s = 19
- Son's age 5 years ago = 19 - 5 = 14 years
Last verified on 25-09-2026
714 Find the next number in the series: 1, 2, 4, 7, 11, 16, ?
Explanation
- The differences between terms increase by 1 each time
- Differences: 1,2,3,4,5,6
- 16+6=22
Last verified on 25-09-2026
715 What is the angle between the hour and minute hand of a clock at 6:30?
Explanation
- Using formula
- 30H - 5.5M
- H=6, M=30
- 180 - 165
- = 15°
Last verified on 25-09-2026
716 The sum of present ages of a man and his son is 45 years. Five years ago, the man was 4 times as old as his son. Find the son’s present age.
Explanation
- Man + Son = 45
- (Man - 5) = 4(Son - 5)
- Man = 4(Son) - 15
- Substituting: 4Son - 15 + Son = 45
- 5Son = 60
- Son = 12 years
Last verified on 25-09-2026
717 Find the next number in the series: 2, 4, 6, 8, 10, ?
Explanation
- The series follows a pattern of adding 2 each time
- 2+2=4, 4+2=6, 6+2=8, 8+2=10, 10+2=12
Last verified on 25-09-2026
718 Find the next number in the series: 5, 15, 45, 135, ?
Explanation
- Each term is obtained by multiplying the previous term by 3
- 135x3=405
Last verified on 25-09-2026
719 A is twice as old as B. Ten years ago, A was three times as old as B. Find B’s present age.
Explanation
- Let B = x, A = 2x
- (2x - 10) = 3(x - 10)
- 2x - 10 = 3x - 30
- x = 20
- B's present age = 20 years
Last verified on 25-09-2026
720 Find the next number in the series: 3, 6, 12, 24, ?
Explanation
- Each term is obtained by multiplying the previous term by 2
- 3x2=6, 6x2=12, 12x2=24, 24x2=48
Last verified on 25-09-2026