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5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
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1
Number of prime numbers from 1 to 50 are:
18
12
15
20
2
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.
10
8
6
3
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
4
Solve 16 + 4 - 9
11
5
16
Find the two consecutive odd numbers whose sum is 64.
23 and 41
21 and 43
31 and 33
11 ans 53
LCM of two numbers = ____________________
Product of two numbrestheir HCF
Product of numbers X their HCF
Product of numbres
None of these
7
Which of the following pairs of number are co-primes?
11, 111
22, 222
12, 36
14, 50
Consider the following statement :
i. The product of two composite numbers remains same on changing their order.
ii. The product of a pair of co-primes is changed on changing their order.
only i is true
i is false but ii is true
Both i and ii are true
Neither i nor ii is correct
9
H.C.F of 36 and 144 is ____________
36
144
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
-2
-3
-5
-4
(30 / 5 + 28 - 20) + (3 +5 - 0 x 5 + 3 - 2 )
23
34
13
The smallest composite number is __________.
14
Solve:
54
38
32
45
Twin primes are pairs of _______________________ .
Consecutive odd with a difference of 2
Consecutive even with a difference of 2
Consecutive prime with a difference of 2