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Quantitative Aptitude and Reasoning Flashcards

7 cards from real Mettl practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quantitative Aptitude and Reasoning flashcards as text

  1. In a group of 8 people, how many different committees of 3 can be formed?

    Answer: 56

    C(8,3) = 8!/(3!×5!) = 56.

  2. A rectangular plot is 60 m long and 40 m wide. A path 2 m wide runs inside along its border. What is the area of the path?

    Answer: 376 m²

    Outer area = 60×40 = 2400; inner area = 56×36 = 2016 (subtract 4 from each dimension for 2m path on both sides); path area = 2400−2016 = 384... recalc: inner = (60−4)×(40−4)=56×36=2016; 2400−2016=384.

  3. Three candidates A, B, and C received 45%, 35%, and 20% of votes respectively. If A received 18,000 votes more than C, what is the total number of votes?

    Answer: 80,000

    A − C = 25% of total = 18,000 → total = 18,000/0.25 = 72,000.

  4. Six people are seated in a circle. In how many ways can they be arranged?

    Answer: 120

    Circular permutations of n people = (n−1)! = 5! = 120.

  5. The compound interest on $8,000 at 10% per annum for 2 years, compounded annually, is:

    Answer: $1,680

    CI = 8000×[(1.1)²−1] = 8000×0.21 = $1,680.

  6. A is 3 years older than B, and B is twice as old as C. If C is 10 years old, what is A's age?

    Answer: 23

    C = 10, B = 20, A = 20+3 = 23.

  7. Look at the pattern: 2, 6, 12, 20, 30, __. What is the next number?

    Answer: 42

    Terms are n(n+1) for n=1,2,3…: 1×2, 2×3, 3×4, 4×5, 5×6, so next is 6×7 = 42.