Practice GIKI Quantitative Reasoning questions with answers and explanations.
Choose an option to check your answer.
Multiply numerators and denominators, then simplify.
(3 × 10)/(5 × 9) = 30/45 = 2/3.
Choose an option to check your answer.
Dividing by a fraction means multiplying by its reciprocal.
Thus, 4/7 × 3/2 = 12/14 = 6/7.
Choose an option to check your answer.
The decimal 0.375 equals 375/1000.
Dividing numerator and denominator by 125 gives 3/8.
Choose an option to check your answer.
Divide 7 by 20 or convert the denominator to 100.
Since 7/20 = 35/100, the decimal is 0.35.
Choose an option to check your answer.
Twenty-five percent is one quarter.
One quarter of 240 is 240 ÷ 4 = 60.
Choose an option to check your answer.
The increase is 20 on an original value of 80.
The percentage increase is 20/80 × 100 = 25%.
Choose an option to check your answer.
The square root is the number whose square equals 196.
Since 14 × 14 = 196, the answer is 14.
Choose an option to check your answer.
The cube root is the number that gives 729 when cubed.
Since 9³ = 729, the answer is 9.
Choose an option to check your answer.
The sequence increases by 3 each time.
Adding 3 to 11 gives 14.
Choose an option to check your answer.
The sum of the first n natural numbers is n(n + 1)/2.
For n = 10, the sum is 10 × 11 ÷ 2 = 55.
Choose an option to check your answer.
Multiples of 8 are 8, 16, 24, and so on.
The first multiple also divisible by 12 is 24.
Choose an option to check your answer.
The sum of the first n odd numbers equals n².
For n = 8, the sum is 8² = 64.
