Practice GIKI Mathematics questions with answers and explanations.
Choose an option to check your answer.
Multiply both numbers by 10 to remove decimals.
Then 48 ÷ 6 = 8.
Choose an option to check your answer.
The third decimal digit is 6, so the second decimal digit is rounded up.
Thus, 18.746 becomes 18.75.
Choose an option to check your answer.
The reciprocal of 0.25 is 1 ÷ 0.25.
Since 0.25 = 1/4, its reciprocal is 4.
Choose an option to check your answer.
One third of 3/4 is 1/4 of the full tank.
The remaining amount is 3/4 - 1/4 = 1/2.
Choose an option to check your answer.
One hundred fifty percent equals 1.5.
Multiplying 80 by 1.5 gives 120.
Choose an option to check your answer.
Since 12.5% = 1/8, one eighth of the number is 25.
The whole number is 25 × 8 = 200.
Choose an option to check your answer.
After a 30% discount, 70% of the original price remains.
Thus, the original price is 840 ÷ 0.70 = 1,200.
Choose an option to check your answer.
The decrease is Rs. 75.
The percentage decrease is 75/500 × 100 = 15%.
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.
