General Knowledge — All MCQs
5927 questions available
Q5901.Pick the odd color out: Yellow, Red, Green, Blue.
Correct Answer: C
Red, Green, and Blue are primary colors of light (RGB), whereas Yellow is a secondary color.
Q5902.Which number is different from the rest in this list: 3, 7, 11, 14, 17, 21?
Correct Answer: C
14 is the only even number in the list. All other numbers are odd.
Q5903.Which of these numbers is different from the rest: 2, 4, 20, 5?
Correct Answer: D
5 is an odd number, while 2, 4, and 20 are all even numbers.
Q5904.Which of these numbers is odd: 12, 24, 17, 18?
Correct Answer: C
17 is not divisible evenly by 2, so it is an odd number. All others are even.
Q5905.What is the value of log(1) under any base?
Correct Answer: A
Since any base raised to the power 0 is 1 (e.g. 10⁰ = 1, e⁰ = 1), log(1) is always 0.
Q5906.A father tells his son, "I was of your present age when you were born." If the father is 36 years old now, how old was the boy 5 years ago?
Correct Answer: C
Let son's present age be x. Father's age when son was born was x. Current father's age is x + x = 2x = 36 => x = 18. Five years ago, the son's age was: 18 - 5 = 13.
Q5907.Ayesha is 24 years old. She is twice as old as Benish. When she was as old as Benish, what is Benish's present age?
Correct Answer: C
Ayesha's age is 24, which is twice Benish's present age. Thus, Benish's present age is: 24 / 2 = 12 years.
Q5908.Rahima is younger than Ahmed and Azmat is elder than Ahmed. Who is the eldest?
Correct Answer: C
Ahmed is older than Rahima but younger than Azmat. This means: Azmat > Ahmed > Rahima. Therefore, Azmat is the eldest.
Q5909.What is the mantissa?
Correct Answer: B
The mantissa is the fractional or decimal part of a logarithm, whereas the characteristic is the integer part.
Q5910.If log(i) + log(j) = log(100), then the value of i × j is:
Correct Answer: C
By logarithmic properties: log(i) + log(j) = log(i * j). Therefore, log(i * j) = log(100), which implies i * j = 100.
Q5911.Shahid is older than Ahmed. Ahmed is older than Fatima. Fatima is older than Bilal. Who is the youngest among them?
Correct Answer: D
The height/age order is: Shahid > Ahmed > Fatima > Bilal. Therefore, Bilal is the youngest.
Q5912.Kamal is older than Jamal, Jamal is older than Hussain, and Hussain is older than Waqar. Who is the oldest?
Correct Answer: C
The age order is: Kamal > Jamal > Hussain > Waqar. Thus, Kamal is the oldest.
Q5913.log 729 (base 10) is approximately equal to?
Correct Answer: A
log10(729) = log10(3^6) = 6 * log10(3) ≈ 6 * 0.47712 = 2.8627.
Q5914.log 6 (base 10) is approximately equal to?
Correct Answer: D
log10(6) = log10(2) + log10(3) ≈ 0.3010 + 0.4771 = 0.7781.
Q5915.What is the value of log₃ 81?
Correct Answer: B
Since 81 = 3⁴, log₃ 81 = 4.
Q5916.A government office has six employees: A, B, C, D, E, and F seated around a circular table. If A is sitting directly opposite D and B is seated to the immediate right of A, who is sitting to the immediate left of D?
Correct Answer: C
Arranging around a circle: A is at 12 o'clock, B is to A's immediate right (1 o'clock). D is opposite A (6 o'clock). The person seated to the immediate left of D is at 5 o'clock, which is F.
Q5917.What is the square root of 48?
Correct Answer: A
√48 ≈ 6.928.
Q5918.What is the square root of 4.41?
Correct Answer: B
√4.41 = 2.1 because 2.1 × 2.1 = 4.41.
Q5919.Solve: 0.75 × 0.567 ÷ 0.134
Correct Answer: C
0.75 × 0.567 = 0.42525. 0.42525 ÷ 0.134 ≈ 3.172.
Q5920.Evaluate: cot(a - 90°) is equal to?
Correct Answer: B
cot(a - 90°) = -cot(90° - a) = -tan(a).