Question
Find the smallest perfect square that is divisible by 10,
14, 18, and 21. What is the remainder when it is divided by 85?Solution
ATQ,
LCM of 10, 14, 18 and 21 = 630
Since, 630 = (2 × 3 × 3 × 5 × 7)
To make it a perfect square, multiply by (2 × 5 × 7) = 70
So, required number = 630 × 70 = 44100
44100 ÷ 85 = 518 × 85 + 30
So, desired remainder = 30
Pawan has some money left after spending 20%, 15% and 30% of monthly salary on rent, electricity and shopping respectively. The remaining money with Paw...
- P is 20% less than Q and R is 35% more than S. If S is 18% more than P, then which of the following is true?
The number of boys and girls in a school is 120 and 200 respectively. 25% of boys left the school while 40 girls took admission in the school. Find the ...
A man donated 22%, 11% and 26% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...
Two numbers are less than a third number by 25% and 31% respectively. Find the percent by which the second number is less than the first.
The population of a city is decreased by 14% in the first year and then increased by 25% in the second year. Find the population of the city at the end...
'R' spends 30% of his monthly income on utilities, 35% on household expenses, and 10% of the remaining amount on transportation. He saves the rest in a ...
If 20% of a = b and then b is:
A man spends 20% and 22% of his monthly salary on rent and transportation, respectively. Out of the remaining money, he spends 34% on food and 49% on en...
What is the value of √25% =?
