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Question 1:

Find the missing number in the sequence: 5, 10, 15, 20, ?

Step 1: Observe the pattern: 5→10 (+5), 10→15 (+5), 15→20 (+5).

Step 2: Next term = 20 + 5 = 25

Answer: 25

Question 2:

Find the missing number: 1, 4, 9, 16, ?

Step 1: Observe the pattern: 1=1², 4=2², 9=3², 16=4².

Step 2: Next term = 5² = 25

Answer: 25

Question 3:

In a row, A is 5th from the top and 8th from the bottom. How many persons are in the row?

Step 1: Rank from top = 5, Rank from bottom = 8.

Step 2: Total = 5 + 8 - 1 = 12

Answer: 12 persons

Question 4:

In a row of 30 students, A is 10th from the left and B is 18th from the right. How many students are between A and B?

Step 1: A's position from left = 10.

Step 2: B's position from left = 30 - 18 + 1 = 13.

Step 3: Persons between = |13 - 10| - 1 = 3 - 1 = 2

Answer: 2 students

Question 5:

A is 12th from the left and B is 18th from the left. If A and B interchange positions, A becomes 8th from the left. What is B's new position?

Step 1: A's position = 12, B's position = 18.

Step 2: After interchange, A is at B's original position = 18, but A is now 8th from left.

Step 3: Wait — when A and B interchange, A goes to B's position (18). But A is now 8th from left. This means B's original position was actually 8th from left? No.

Step 4: Let's re-read: A is 12th from left, B is 18th from left. They interchange. Now A is 8th from left.

Step 5: This means B's position (18) is now A's new position, but A is 8th from left.

Step 6: So after interchange, B goes to A's original position (12).

Step 7: B's new position = 12th from left.

Answer: B is 12th from the left

Question 6:

What is the angle between the hour and minute hands at 3:00?

Step 1: At 3:00, hour hand is at 3 (90° from 12). Minute hand is at 12 (0°).

Step 2: Angle = 90° - 0° = 90°

Formula check: Angle = |30H - 5.5M| = |30×3 - 5.5×0| = 90°

Answer: 90°

Question 7:

At what time between 2 and 3 o'clock will the hour and minute hands coincide?

Step 1: Formula: Coincide Time = 60H/11 minutes past H, where H = 2.

Step 2: Time = 60×2/11 = 120/11 = 10.909 minutes past 2.

Step 3: = 2:10:54.5 (approx)

Answer: 2:10:54 (approximately)

Question 8:

If today is Monday, what day will it be after 10 days?

Step 1: 10 days = 1 week + 3 days.

Step 2: After 1 week, it's Monday again. After 3 more days: Monday + 3 = Thursday.

Answer: Thursday

Question 9:

What day was it 5 days before Sunday?

Step 1: 5 days before Sunday: Sunday - 5 = Tuesday.

Answer: Tuesday

Question 10:

How many hours are there between 9:00 AM and 4:00 PM?

Step 1: 9:00 AM to 12:00 PM = 3 hours.

Step 2: 12:00 PM to 4:00 PM = 4 hours.

Step 3: Total = 3 + 4 = 7 hours.

Answer: 7 hours

Question 11:

Arrange the following events in chronological order:

A) World War I (1914-1918)

B) Indian Independence (1947)

C) World War II (1939-1945)

D) French Revolution (1789)

Step 1: Sort by year: 1789 (D), 1914-1918 (A), 1939-1945 (C), 1947 (B).

Answer: D → A → C → B

Everything You Need for Number, Ranking & Time Sequence Revision

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