Practice Pakistan questions with answers and explanations.
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The cube root is the number that gives 729 when cubed.
Since 9³ = 729, the answer is 9.
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The sequence increases by 3 each time.
Adding 3 to 11 gives 14.
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Daily work equals total work divided by the number of days.
Thus, A's one-day work is 1/12.
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Their combined daily rate is 1/10 + 1/15 = 1/6.
Therefore, they complete the job in 6 days.
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B's rate is 1/8 - 1/12 = 1/24.
Therefore, B alone needs 24 days.
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Worker-days remain constant for the same job.
Thus, 15 × 20 ÷ 12 = 25 workers.
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Twice the efficiency means twice the daily work rate.
Therefore, A takes half of 18 days, which is 9 days.
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Multiplication is performed before addition.
Thus, 3 × 4 = 12 and 5 + 12 = 17.
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The operation inside parentheses is completed first.
Then 12 ÷ 3 = 4.
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The multiplicative inverse of a nonzero fraction is its reciprocal.
Interchanging numerator and denominator gives 7/5.
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Since 12 × 13 = 156, subtracting gives 157 - 156 = 1.
Thus, the remainder is 1.
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Division and multiplication have equal priority and are performed left to right.
So 48 ÷ 6 = 8, and 8 × 3 = 24.
