Numbers Questions

• The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term
• What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?
• What is the value of 10.2+10.02+10.002+... upto 9 terms
• The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find two numbers.
• Direction: What should come in the place of question mark (?) in the following number series? 9, 11, 16, 26, ?, 69
• What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)
• What will be the next set of numbers in the series? (2,3), (3,5), (5,7), (7,11), (11,13), ___
• All rational numbers are ____ numbers.
• What is the least number that can be multiplied to 69120 to make it a perfect cube?
• What is the least number that when divided by 63 and 105 leaves remainder 4 in each case?
• Find two numbers whose sum is 29 and the product is 100.
• Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.
• Find a two digit number which is exactly three times the product of its digits?
• Which of the following is not a Triangular number?
• Product of digits of a 2-digit number is 18. If we add 63 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.
• Which of the following numbers is completely divisible by 99?
• The sum of a non-zero number and its reciprocal is 2. What is the number?
• Direction: What should come in the place of question mark (?) in the following number series? 2, 3, 6, 15, 45, ?
• Direction: What should come in the place of question mark (?) in the following number series? 3, 4, 10, 33, 136, ?
• Direction: What should come in the place of question mark (?) in the following number series? 7, 10, 16, 28, ?, 100