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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
Choose the co-prime numbers from the following pairs.
7 and 63
36 and 25
35 and 21
63 and 81
2
23 and 24 are co-prime numbers or not?
True
False
Not sure
None of these
3
1 is neither ______ nor composite.
twin prime
co- prime
odd prime
prime
4
6 is a composite number as it has ______________ factors.
5
The difference between a 2- digit number and the number obtained by reversing the digit is 45 .The difference between the two digit of that number is _______________.
9
8
6
The difference between a 2- digit number and the number obtained by reversing the digit is 27.The difference between the two digit of that number is _____________
7
How many prime numbers are these between 10 and 20?
Find the even number from the following numbers.
1231, 8989, 889, 14546
1231
8969, 14546
14546
8989
Which of the following is/ are a twin primes pairs:
(11,13) and (17,19)
(71, 73) and (59, 61)
(29, 31) and (41, 43)
All of these
10
Identify the twin primes pairs:
(19, 21) and (9, 11)
(29, 31) and (17, 19)
Both A and B
none of these
11
From the first five multiples of 5, which are even numbers?
20
10,20
10,15
12
Least prime number is ___________________.
0
13
Find the sum of the values of the literal (a) in the general form represents for the number 325, 526, 987
19
18
17
14
The smallest composite number is __________.
15
__________________ are 7 consecutive composite numbers less than 100 so that there is no prime number between them .
90,91, 92, 93, 94, 95, 96
86, 88, 90, 92, 94, 96, 98
91, 92, 93, 94, 95, 97, 99
16
Consider the following statements.Which of the above statement (s) is /are correct?
(i) Every prime is odd.
(ii) Product of any two prime numbers is odd.
Only (i)
Only (ii)
Both (i) and (ii)
Neither (i) nor (ii)
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
The largest 4-digit even number and smallest 4-digit odd number are respectively ____________________
1000 and 9999
9998 and 1001
1001 and 9998
9999 and 1000
Which is the smallest and largest odd prime number in between 24 and 60 ?
27,57
29,57
29,59
27,59
If p and q are co-prime numbers then is p2 and q2 are also co-prime?
yes
no
maybe