Puzzles & Problem Solving
40 questions available
FILTER BY SUBTOPIC
Q1.If I am sixth In a queue from either end. How many people are there in the queue?
Correct Answer: A
Q2.Next number in the series 6,9,18,45,126,?
Correct Answer: C
Q3.Next number in the series: 1,1,2,6,24:
Correct Answer: D
Q4.If Asif is standing in a queue in such a way that he is sixth in a way that he is sixth in the queue from either side, then how many people are there in the queue?
Correct Answer: A
11 is the correct answer because it matches the fact or concept tested by this question.
Q5.Analytical Seating: A,B,C,D,E,F,G,H sit in circle. A is 4th right of H, 2nd left of F. C is not neighbor of F/B. D is 3rd right of C. H not next to G. Who sits between B and D?
Correct Answer: A
Plotting coordinates: A is 4th right of H (opposite). F sits 2 places right of A. Placing others satisfies C is opposite G, and F sits between B and D. Answer is F.
Q6.If 2×2 = 11, 4×2 = 21, 6×2 = 31, 6×6 = 33, then 8×8 = ____?
Correct Answer: C
The pattern splits the math operation: (first number / 2) and (second number / 2) written side-by-side. For 8x8: (8/2 = 4) and (8/2 = 4), which yields 44.
Q7.A boy is 3 years old and his sister is 3 times older. What is the sister's age when the boy is 11 years old?
Correct Answer: C
Boy's current age = 3. Sister's current age = 3 * 3 = 9. The age difference is 9 - 3 = 6 years. When the boy is 11, the sister will be 11 + 6 = 17 years old.
Q8.Mr. and Mrs. Sajjad have seven daughters. Each daughter has one brother. What is the total number of family members?
Correct Answer: B
The family consists of 2 parents, 7 daughters, and 1 brother (who is the shared brother to all daughters). Total = 2 + 7 + 1 = 10.
Q9.A is taller than B, and B is taller than C, who is tallest?
Correct Answer: A
The relative heights are given as A > B and B > C. Therefore, A > B > C, making A the tallest.
Q10.A school organized a knockout football competition in which 23 teams played. What was the least number of matches they needed to play to decide the winner?
Correct Answer: B
In a knockout tournament, each match eliminates one team. To decide a single winner from 23 teams, you must eliminate 22 teams, requiring 22 matches.
Q11.Typing the word, 'typewriter,' requires only one row of keys on a standard QWERTY computer keyboard.
Correct Answer: A
The word 'typewriter' is spelled entirely using the top row of letters on a standard QWERTY keyboard: Q W E R T Y U I O P.
Q12.When you reverse the digits of the number 13, the number increases by 18. How many other two-digit numbers increase by 18 when their digits are reversed?
Correct Answer: B
Let the number be 10x + y. Reversed = 10y + x. We have (10y+x) - (10x+y) = 18 => 9(y-x) = 18 => y-x = 2 => y = x+2. The possible pairs of (x,y) are (1,3), (2,4), (3,5), (4,6), (5,7), (6,8), (7,9). This is 7 total numbers (13, 24, 35, 46, 57, 68, 79). Since the question asks for OTHER numbers, we exclude 13, leaving 7 - 1 = 6 numbers.
Q13.If you write down all numbers from 1 to 100, how many times would you write the digit 3?
Correct Answer: C
Digit 3 appears in units place 10 times (3, 13, 23, 33, 43, 53, 63, 73, 83, 93) and in tens place 10 times (30, 31, 32, 33, 34, 35, 36, 37, 38, 39). Total = 20 times.
Q14.Which product is smaller in value?
Correct Answer: C
Calculations: A=64M, B=18.53M, C=16.02M, D=18.03M. The smallest product is 8008 x 2001 = 16,024,008.
Q15.Given the sequence 16.531875156352095351025871533501355325, count how many times digit 5 is followed directly by 3 (i.e. '53').
Correct Answer: C
Scanning the string for occurrences of '53': (1) [53]187..., (2) ...156[3] wait... no, the occurrences of '53' are: 53 (at start), then 156352... wait, let's locate '53's: (1) 5318..., (2) ...09535..., (3) ...71533..., (4) ...13553..., (5) ...5325. That is exactly 5 times.
Q16.If 20 students speak Urdu, 33 speak Sindhi only, and 13 speak both, how many students speak only Sindhi?
Correct Answer: B
The question explicitly states that 33 speak Sindhi ONLY, so the answer is 33.
Q17.In a class, 33 students speak Sindhi and 22 speak both Urdu and Sindhi. How many students can speak only Sindhi?
Correct Answer: A
Only Sindhi = Total Sindhi speakers - Both speakers = 33 - 22 = 11.
Q18.S = {1, 2, 3, 4} is a set of:
Correct Answer: C
Natural numbers are positive integers starting from 1: {1, 2, 3, ...}. Since S contains consecutive positive integers starting at 1, it is a set of natural numbers.
Q19.A set of a finite number of elements is simply called a?
Correct Answer: A
By mathematical definition, a set containing a finite number of elements is a finite set.
Q20.If A = {1,2,3,4,6} B= {2,4,5,7} then B-A =?
Correct Answer: D
B - A consists of elements in B that are not present in A. B - A = {5, 7}. Since this set is not listed, 'none' is the correct choice.