Lakshya Education MCQs

Question:

  1. The number ( 6n2 + 6n ) for the natural number n is always divisible by :

Options:
A.6 only        
B. 6 and 12                 
C.   12 only
D. 18 only
Answer: Option B

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More Questions on This Topic :

Question 1.

The numbers 1, 3, 5, ….., 25 are multiplied  together . The number  of zeros at the right end of the product is :

Options:
  1.    0
  2.    1
  3.    2
  4.    3
Answer: Option A
Question 2.

  1. It is given that ( 232 + 1 )  is exactly divisible by a certain number. Which of the following is also definitely divisible by the same number ?

Options:
  1.    ( 216 + 1 )           
  2.     ( 216 – 1 )   
  3.     ( 7 x 233 )           
  4.     ( 296 + 1 )
Answer: Option D
Question 3.

The number 2272 and 875 are dividing by a three – digit number N, giving the same remainder , the sum of the digit of N is :

Options:
  1.    10
  2.    11
  3.    12
  4.    13
Answer: Option A
Question 4.

  1. On multiplying a number by 7 , all the digits in the product appear as 3’s . The smallest such number is :

Options:
  1.    47619  
  2.    47719
  3.     48619 
  4.    47649
Answer: Option A
Question 5.

There are four prime numbers written in ascending order . The product of first three is 385 and that of the last three is 1001 . The first number is :

Options:
  1.    5
  2.    7
  3.    11
  4.    17
Answer: Option A
Question 6.

  1. A positive number which when added to 1000 , gives a sum which is greater than    



        when it is multiplied by 1000. this  integer is :

Options:
  1.    1
  2.    12
  3.    13
  4.    20
Answer: Option D