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1
In which of the following Prime Factorisation is not completed ?
70 = 2 X 5 X 7
28 = 2 X 2 X 7
48 = 2 X 2 X 2 X 2 X 3
108 = 2 X 2 X 27
2
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
3
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
4
Which of the following numbers is divisible by 3, 7, 9 and 11 ?
37911
2079
3791
639
5
HCF of 24 and 36 is______________
6
9
12
Match the following.
I - i, II - ii, III - iii, IV - iv
I - ii, II - iii, III - iv, IV - i
I - iii, II- i, III - ii, IV - iv
I - iv, II - iii, III - ii, IV - i
7
A class monitor helped his teacher to collect some money from 54 students for a picnic outing. The record of money collected was accidentally smeared with water and only 3 digits of the total cash amount, , were legible. Determine the amount colloected by the monitor.
94616
84618
24614
None of these
8
M and N are co-prime numbers, M is lowest even prime number and N is lowest odd prime number. Which one of the following is their product ?
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
10
Find the largest number that divides 2053 and 967 and leaves a remainder of 5 and 7 respectively.
4096
60
64
512
11
Find the greatest number, which when divides 15 , 21 and 27, leaves the same remainder in each case.
Find the smallest number which leaves remainder 8 and 12 when divided by 28 and 32 respectively.
224
896
204
876
13
Find the least number which when divided by 16, 28, 40 and 77 leaves remainder 8 in each case.
6168
6160
56
616
14
Find the largest number which divides 615 and 963 leaving a remainder 6 in each case.
None of these.
15
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
16
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
17
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.
18
Between which multiple of 10 does 3486 lie?
3480,3500
3460,3480
3480,3490
3470,3480
19
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
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?
Only (i)
Only (ii)
Both (i) and (ii)
Neither (i) nor (ii)