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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
Every number is a ______________ and a _______________ of itself.
Factor , multiple
Prime, composite
Even , odd
None of these
3
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 ?
6
12
8
4
Consider the following statement:
1 and 2 are correct
2 is correct only
2 and 3 are correct
1 and 3 are correct
5
LCM of two numbers is
HCF of two numbers x product of two numbers
Product of two numbers - HCF of two numbers
HCF of two numbers + Product of two numbers
Product of two numbers / HCF of two numbers
Find the two consecutive odd numbers whose sum is 64.
23 and 41
21 and 43
31 and 33
11 ans 53
7
Given below is the procedure to find the L.C.M by prime factorisation method.
Reat the steps by step procedure and arrange the correct order of steps by choosing the correct option.
ABC
BCA
BAC
CAB
Find the HCF of 101 and 573.
9
If z is the H.C.F of x and y, then the H.C.F of and is ________.
x
y
z
10
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
11
Consider the following statements:
Which of the above statement is/are false?
Only (i)
Only (ii)
Only (iii)
All three are false
Find the largest number which divides 615 and 963 leaving a remainder 6 in each case.
None of these.
13
A number less than hundred has the factors 2, 3 and 4. If the sum of the digits of the number is 15, find the number.
78
87
69
14
Find the largest number that divides 2053 and 967 and leaves a remainder of 5 and 7 respectively.
4096
60
64
512
15
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
16
Between which multiple of 10 does 3486 lie?
3480,3500
3460,3480
3480,3490
3470,3480
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
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
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
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)