Number System, Problems on Number

Which of the following has the smallest value?

Arif and Babu worked together to paint a house. Arif worked for 1 hour 45 minutes and Babu worked for 45 minutes. Babu's hourly rate is double the rate of Arif's. If the two together earned Tk 71.50, what is hourly rate of Arif in Taka?

If one number exceeds another number by 14 and the larger number is 3/2 times the smaller number, then the smaller number is -

r > s > 0; Quantity A = (rs)/r and Quantity B = (rs)/s

Jerin has 40% more books than Rashed. However, if she gives 45 of her books to Rashed, then Rashed will have 10% more books than Jerin. How many books did Jerin begin with?

x, y and z are consecutive positive integers such that x < y < z . If the units digit of x² is 6 and the units digit of y² is 9, what is the units digit of x²?

The value of - 4 - (- 10) is how much greater than the value of - 10 -(- 4)?

A class starts at 10.00 am and lasts till 01.30 pm. Four periods are held during this interval. After every period, 10 minutes are given free to the students. What is the exact duration of each period?

Look at the series: 31, 29, 24, 22, 17, ____. What number should come next?

What is the greatest number of boys among whom 100 pens and 165 ice-cream can be divided equally so that no item remains left?

What is the arithmetic mean of the first 100 natural numbers?

In the given series which number comes next: 91, 86, 76, 61.....?

If 2 tables and 3 chairs cost Tk. 3500 and 3 tables and 2 chairs cost Tk. 4000, then how much does a table cost?

0.213 ÷ 0.00213 =?

The least prime number is

The difference between two numbers is 5 and the difference between their squares is 65. What is the larger number?

Find the largest fraction from the following:

At an animal shelter, the ratio of tigers to Zebras is 4 to 7. If there are 27 more zebras than tigers, how many tigers there in the shelter?

How many integers from 1 to 100 are divisible by 3 but not by 8?

Find the number of the divisors of 540.