IQ Quiz with Answers and Explanations

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IQ Quiz with 15 Questions

Answers and Explanations provided

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Which number should come next in this sequence: 2, 4, 8, 16, 32, ?

  • A) 36
  • B) 48
  • C) 64
  • D) 128

Answer: C) 64

Explanation: This sequence follows a pattern where each number is double the previous one. Starting from 2, we multiply by 2 each time: 2 x 2 = 4, 4 x 2 = 8, 8 x 2 = 16, 16 x 2 = 32, and finally, 32 x 2 = 64.

If a clock shows 3:45, what is the angle between the hour and minute hands?

  • A) 82.5°
  • B) 90°
  • C) 97.5°
  • D) 107.5°

Answer: C) 97.5°

Explanation: In a clock, the hour hand moves 0.5° per minute, and the minute hand moves 6° per minute. At 3:45, the hour hand has moved (45 x 0.5°) = 22.5° past 3, so it’s at 112.5°. The minute hand is at 270° (45 minutes x 6°). The angle between them is 270° – 112.5° = 157.5°. However, we need the smaller angle, which is 180° – 157.5° = 97.5°.

If you rearrange the letters “CIFAIPC,” you would have the name of a(n):

  • A) Animal
  • B) Country
  • C) Ocean
  • D) City

Answer: C) Ocean

Explanation: When rearranged, the letters spell “PACIFIC,” which refers to the Pacific Ocean.

If you have a 5-liter jug and a 3-liter jug, how can you measure exactly 4 liters?

  • A) Fill the 5L jug, pour into 3L jug, leftover is 4L
  • B) Fill 5L jug, pour out 4L, leftover is 4L
  • C) Fill 5L jug, pour into 3L jug, pour out 3L jug, pour remaining 2L into 3L jug, refill 5L jug and fill 3L jug to top
  • D) It’s impossible

Answer: C) Fill 5L jug, pour into 3L jug, pour out 3L jug, pour remaining 2L into 3L jug, refill 5L jug and fill 3L jug to top

Explanation: This problem requires multiple steps. First, fill the 5L jug and use it to fill the 3L jug, leaving 2L in the 5L jug. Empty the 3L jug and pour the remaining 2L from the 5L jug into it. Then refill the 5L jug and use it to fill the 3L jug (which already has 2L in it). This will leave exactly 4L in the 5L jug.

Which word does NOT belong with the others?

  • A) Parsimonious
  • B) Frugal
  • C) Thrifty
  • D) Extravagant

Answer: D) Extravagant

Explanation: The words “parsimonious,” “frugal,” and “thrifty” all describe being economical or careful with money. “Extravagant” means the opposite – spending freely or excessively.

If ROAD is coded as URDG, how is SWAN coded?

  • A) VZCP
  • B) VZCQ
  • C) VYDP
  • D) VYDQ

Answer: B) VZCQ

Explanation: In this code, each letter is shifted forward by 3 in the alphabet. R → U, O → R, A → D, D → G. Applying the same rule to SWAN: S → V, W → Z, A → D, N → Q. Therefore, SWAN becomes VZCQ.

Which number should replace the question mark? 2, 3, 5, 8, 13, ?

  • A) 18
  • B) 20
  • C) 21
  • D) 23

Answer: C) 21

Explanation: This is the Fibonacci sequence, where each number is the sum of the two preceding ones. 2 + 3 = 5, 3 + 5 = 8, 5 + 8 = 13, and therefore, 8 + 13 = 21.

If all Zorks are Binks, and some Binks are Gorks, which of the following must be true?

  • A) All Zorks are Gorks
  • B) Some Zorks are Gorks
  • C) No Zorks are Gorks
  • D) None of the above

Answer: B) Some Zorks are Gorks

Explanation: We know all Zorks are Binks, and some Binks are Gorks. This means there’s a possibility that some Zorks are also Gorks, but we can’t say for certain that all Zorks are Gorks or that no Zorks are Gorks. The only logically sound conclusion is that some Zorks may be Gorks.

Which number is the odd one out?

  • A) 256
  • B) 625
  • C) 1024
  • D) 1296

Answer: C) 1024

Explanation: All these numbers are perfect squares, except for 1024. 256 = 16², 625 = 25², 1296 = 36², However, 1024 = 2¹⁰, not a perfect square.

If you flip a fair coin 3 times, what is the probability of getting at least 2 heads?

  • A) 1/4
  • B) 1/2
  • C) 3/8
  • D) 1/8

Answer: B) 1/2

Explanation: There are 8 possible outcomes when flipping a coin 3 times (HHH, HHT, HTH, THH, HTT, THT, TTH, TTT). The favorable outcomes are HHH, HHT, HTH, and THH – 4 out of 8 possibilities. This reduces to 1/2 or 50% probability.

Complete the analogy: Book is to Reading as Fork is to:

  • A) Eating
  • B) Kitchen
  • C) Spoon
  • D) Food

Answer: A) Eating

Explanation: A book is a tool used for reading, just as a fork is a tool used for eating. The relationship is that of an object and its primary use or action associated with it.

If a man walks 1 km South, then 1 km East, then 1 km North, where is he in relation to his starting point?

  • A) 1 km East
  • B) 1 km West
  • C) Back where he started
  • D) 1 km South

Answer: A) 1 km East

Explanation: If you trace the path, you’ll see that the man first goes 1 km South, then 1 km East, and finally 1 km North. The North-South movements cancel each other out, leaving him 1 km East of his starting point.

Which of the following numbers is the odd one out?

  • A) 11
  • B) 13
  • C) 17
  • D) 21

Answer: D) 21

Explanation: 11, 13, and 17 are all prime numbers, while 21 is not. 21 is divisible by 3 and 7, making it a composite number.

Complete the sequence: J, F, M, A, M, J, J, ?

  • A) S
  • B) O
  • C) A
  • D) N

Answer: C) A

Explanation: This sequence represents the first letters of the months of the year: January, February, March, April, May, June, July. The next month is August, so the answer is A.

Which figure doesn’t belong in the group?

  • A) Square
  • B) Rectangle
  • C) Rhombus
  • D) Circle

Answer: D) Circle

Explanation: A square, rectangle, and rhombus are all quadrilaterals (four-sided shapes) with pairs of parallel sides. A circle is fundamentally different as it has no straight sides or angles.

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