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1
Prime factors of 140 are:
2 X 2 X 7
2 X 2 X 5
2 X 2 X 5 X 7
2 X 2 X 5 X 7 X 3
2
Consider the following statement:
1 and 2 are correct
2 is correct only
2 and 3 are correct
1 and 3 are correct
3
Least common multiple of 4 and 9 is
32
40
45
36
4
Column - I Column - II
(A) The L.C.M of two prime numbers 'a' and 'b' (a>b) is 161. The value of 3b - a is (p) 322
(B) H.C.F of 4 X 27 X 3125, (q) 130
8 X 9 X 25 X 7 and 16 X 81 X 5 X 11 X 49 is
(C) If the H.C.F of two numbers (each greater than 13) be 13 and the L.C.M be 273, (r) -2
then the sum of numbers is
(D) The H.C.F of two numbers is 23 and the other two
factors of their L.C.M are 13 and 14. The larger of the two number is (s) 180
Choose the correct option:
A s; B r; C q; D p
A s; B r; C p; D q
A r; B s; C q; D p
A r; B s; C p; D q
5
A prime number has two factros 1 and the number itself. Which one of the following is correct about the prime factors of greatest number of two digit?
3 X 3 X 11 X 11
3 X 3 X 11 X 21
3 X 3 X 11
All of these
6
HCF of 24, 36 and 56 is ________________
24
12
7
Find the HCF of 101 and 573.
8
A ________ of a number is an exact dividor of that number.
multiple
factor
dividend
None of these
9
L.C.M. of two co-prime numbers is their:
sum
difference
product
quotient
10
Find the least number which when divided by 16, 28, 40 and 77 leaves remainder 8 in each case.
6168
6160
56
616
11
Find the smallest number which leaves remainder 8 and 12 when divided by 28 and 32 respectively.
224
896
204
876
Find the least number which when divided by 8, 14, 22 and 36 leaves remainders 4, 10, 18 and 32 respectively.
5544
5540
11088
11084
13
Consider the following statements:
Which of the above statement is/are false?
Only (i)
Only (ii)
Only (iii)
All three are false
14
There are 56 students in section A and 58 students in section B of a class in a school. Find the minimum number of books required for their class library so that they can be distributed equally among the students of section A or section B.
1600
1624
812
406
15
Between which multiple of 10 does 3486 lie?
3480,3500
3460,3480
3480,3490
3470,3480
16
There are four prime numbers written in ascending order. The product of the first three is 385 and that last three is 1001. The first number is
17
Match the following
(p) 2
A t; B s; C q; D r; E p
A s; B t; C p; D q; E r
A s; B t; C q; D p; E r
A t; B s; C P; D r; E q
18
In a groups of cows and ducks, the number of legs was 48. If the number of heads of ducks was 8, find the number of cows in the group.
19
Two tankers contain 850 litres and 680 litres of petrol respectively . Find the maximum capacity of container which can measure the petrol of either tanker in exact number of times .
170
25
None of these.
20
Consider the following statements.
(i) Every number is a factor of itself.
(ii) Every number is multiple of itself.
Which statement is the correct?
Both (i) and (ii)
Neither (i) nor (ii)