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CAT · Practice Sheet 42

Sheet code: CAT-S42 · 20 questions

Name: ______________
Date: ______________
  1. 1.
    Quantitative Aptitude

    A vehicle covers 256 km in 4 hours. Find its average speed.

    Formula:Speed, Distance & Time
    Speed=DistanceTime\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}
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  2. 2.
    Quantitative Aptitude

    Find the simple interest on ₹7,000 at 6% per annum for 6 year(s).

    Formula:Simple Interest
    SI=P×R×T100SI = \dfrac{P\times R\times T}{100}
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  3. 3.
    Quantitative Aptitude

    Two varieties costing ₹39 and ₹72 per kg are mixed to give a mixture worth ₹64 per kg. Find the mixing ratio.

    Formula:Alligation (Mixtures)
    q1q2=p2mmp1\dfrac{q_1}{q_2} = \dfrac{p_2-m}{m-p_1}
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  4. 4.
    Quantitative Aptitude

    In how many ways can 3 objects be chosen from 8 distinct objects? (Find ⁿᴄᵣ for n = 8, r = 3.)

    Formula:Combinations
    nCr=n!r!(nr)!^{n}C_{r} = \dfrac{n!}{r!\,(n-r)!}
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  5. 5.
    Quantitative Aptitude

    What is 40% of 620?

    Formula:Percentage of a Number
    Value=P100×N\text{Value} = \dfrac{P}{100}\times N
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  6. 6.
    Quantitative Aptitude

    A vehicle covers 184 km in 4 hours. Find its average speed.

    Formula:Speed, Distance & Time
    Speed=DistanceTime\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}
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  7. 7.
    Mathematics

    Find the binomial coefficient C(10, 2) — the coefficient of x^2 in (1 + x)^10.

    Formula:Binomial Coefficient
    (nr)=n!r!(nr)!\binom{n}{r} = \dfrac{n!}{r!\,(n-r)!}
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  8. 8.
    Quantitative Aptitude

    A value changes from 200 to 170. Find the percentage decrease.

    Formula:Percentage Change
    %change=newoldold×100\%\,\text{change} = \dfrac{|new-old|}{old}\times 100
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  9. 9.
    Mathematics

    Find term number 6 of a geometric progression with first term 3 and common ratio 3.

    Formula:GP nth Term
    an=arn1a_n = a\,r^{\,n-1}
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  10. 10.
    Mathematics

    Find the sum of the first 15 terms of an AP with first term 20 and common difference 2.

    Formula:AP Sum of n Terms
    Sn=n2[2a+(n1)d]S_n = \dfrac{n}{2}\,[2a+(n-1)d]
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  11. 11.
    Mathematics

    Find term number 3 of a geometric progression with first term 4 and common ratio 3.

    Formula:GP nth Term
    an=arn1a_n = a\,r^{\,n-1}
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  12. 12.
    Mathematics

    Evaluate log base 2 of 16.

    Formula:Logarithm Evaluation
    logb(bk)=k\log_{b}(b^{k}) = k
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  13. 13.
    Mathematics

    Find term number 6 of a geometric progression with first term 1 and common ratio 2.

    Formula:GP nth Term
    an=arn1a_n = a\,r^{\,n-1}
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  14. 14.
    Quantitative Aptitude

    A vehicle covers 300 km in 6 hours. Find its average speed.

    Formula:Speed, Distance & Time
    Speed=DistanceTime\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}
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  15. 15.
    Quantitative Aptitude

    The marked price of an item is ₹800. After a 10% discount, find the selling price.

    Formula:Discount & Selling Price
    SP=MP(1d100)SP = MP\left(1-\dfrac{d}{100}\right)
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  16. 16.
    Mathematics

    Find term number 3 of a geometric progression with first term 6 and common ratio 3.

    Formula:GP nth Term
    an=arn1a_n = a\,r^{\,n-1}
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  17. 17.
    Mathematics

    Find the sum of the first 5 terms of a GP with first term 3 and common ratio 2.

    Formula:GP Sum of n Terms
    Sn=arn1r1S_n = a\,\dfrac{r^{n}-1}{r-1}
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  18. 18.
    Mathematics

    Find the distance between the points (-7, -4) and (-3, -6).

    Formula:Distance Between Two Points
    d=(x2x1)2+(y2y1)2d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}
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  19. 19.
    Mathematics

    Evaluate log base 5 of 25.

    Formula:Logarithm Evaluation
    logb(bk)=k\log_{b}(b^{k}) = k
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  20. 20.
    Quantitative Aptitude

    Two fair dice are rolled. What is the probability that the sum of the numbers is 7?

    Formula:Probability (two dice)
    P=favourabletotalP = \dfrac{\text{favourable}}{\text{total}}
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