Math Ch-1 Mock Test

10 Questions | By Sharma.harsh895 | Last updated: May 9, 2020

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1.

1. The decimal expansion of number has:
- A.
  
  A terminating decimal
- B.
  
  Non-terminating but repeating
- C.
  
  Non-terminating non repeating
- D.
  
  Terminating after two places of decimal
2.

The values of x and y in the given figure are:
- A.
  
  X = 10; y = 14
- B.
  
  X = 21; y = 84
- C.
  
  X = 21; y = 25
- D.
  
  Terminating after two places of decimal
3.

For any positive integer a and 3, there exist unique integers q and r such that a = 3q + r, where r must satisfy :
- A.
  
  0 ≤ r < 3
- B.
  
  1 < r < 3
- C.
  
  0 < r < 3
- D.
  
  Terminating after two places of decimal
4.

The HCF and LCM of two numbers are 33 and 264 respectively. When the first number is completely divided by 2 the quotient is 33. The other number is:
- A.
  
  66
- B.
  
  130
- C.
  
  132
- D.
  
  196
5.

What will be the least possible number of the planks, if three pieces of timber 42 m, 49 m and 63 m long have to be divided into planks of the same length?
- A.
  
  5
- B.
  
  6
- C.
  
  7
- D.
  
  Terminating after two places of decimal
6.

L.C.M. of 23 × 32 and 22 × 33 is :
- A.
  
  23
- B.
  
  33
- C.
  
  23 x 33
- D.
  
  22 x 32
7.

If A = 2n + 13, B = n + 7, where n is a natural number then HCF of A and B is:
- A.
  
  2
- B.
  
  1
- C.
  
  3
- D.
  
  4
8.

The decimal expansion of the rational number will terminate after
- A.
  
  2
- B.
  
  1
- C.
  
  3
- D.
  
  4
9.

The product of rational and irrational no is
- A.
  
  Rational
- B.
  
  Irrational
- C.
  
  Both of above
- D.
  
  None of above
10.

If two positive integers a and b are written as a = x³y² and b = xy³; x, y are prime numbers, then HCF (a, b) is
- A.
  
  XY
- B.
  
  Xy²
- C.
  
  X³y³
- D.
  
  X²y²