# Find the remainder when 231 is divided by 5.

1.  4

2.  5

3.  3

4.  7

4

3

Explanation :
No Explanation available for this question

# The sum of three digit number is subtracted from the number. The resulting number is always

1.  divisible by 6

2.  not divisible by 6

3.  divisible by 9

4.  not divisible by 9

4

divisible by 9

Explanation :
No Explanation available for this question

# If N=23×34 , M= 22×3×5, then find the number of factors of N that are common with the factors of M.

1.  8

2.  6

3.  18

4.  20

4

6

Explanation :
No Explanation available for this question

# The remainder when the positive integer m is divided by 7 is x. The remainder when m is divided by 14 is x+7. Which one of the following could m equal

1.  45

2.  53

3.  72

4.  85

4

53

Explanation :
No Explanation available for this question

# (AA)2=DCBA, where A,B,C and D are distinct digits with B being odd. Find the value of D.

1.  4

2.  6

3.  1

4.  1 or 4

4

4

Explanation :
No Explanation available for this question

# What is the last digit of the number  + 1

1.  1

2.  4

3.  7

4.  3

4

4

Explanation :
No Explanation available for this question

# If x and y are any natural numbers, then which of the following is an odd number

1.  xy+yx+(x−y)(xy+x)

2.  xy(x+y)(xy+x)

3.  yx(xy–y)(xy−x)

4.  None of these

4

xy+yx+(x−y)(xy+x)

Explanation :
No Explanation available for this question

# A and B are playing mathematical puzzles. A asks B "which whole numbers, greater than one, can divide all the nine three digit numbers111,222,333,444,555,666, 777,888 and 999" B immediately gave the desired answer. It was

1.  3, 37 and 119

2.  3, 37 and 111

3.  9, 37 and 111

4.  3, 9 and 37

4

3, 37 and 111

Explanation :
No Explanation available for this question

# Two prime numbers A,B(A23, then which of the following numbers would always divide A+B

1.  12

2.  8

3.  24

4.  None of these

4

12

Explanation :
No Explanation available for this question

1.  0

2.  5

3.  14

4.  21

4