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1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
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4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
Number of prime numbers between 50 to 60 is:_________________ .
2
3
4
Number of prime numbers from 1 to 50 are:
18
12
15
20
Which of the following pairs are twin primes?
(19, 21)
(29, 31)
(39, 41)
All of these
The smallest prime number is ________
5
What does the literal (b) in the general form represents for the number 689
80
8
9
6
Which of the following is not a composite number?
7
The number which is neither prime nor composite is
0
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 _______________.
Which of the following statement is false?
(i) An even number is always divisible by 3.
(ii) Even numbers leaves remainder 0 when divided by 2.
(iii) Product of two even numbers is always even.
(i), (ii)
(ii),(iii)
(i)
(iii)
10
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
11
In a two-digit number,the digit in the units place is four times the digit in the tens place and sum of the digits is equal to 10. Find the number.
32
14
37
28
From the first five multiples of 5, which are even numbers?
10,20
10,15
13
The smallest and largest three digit odd number are __________________
101,997
101, 999
100, 998
101, 998
Least prime number is ___________________.
If p and q are co-prime numbers then is p2 and q2 are also co-prime?
yes
no
maybe
none of these
16
Number of pairs of twin prime numbers between 1 and 50 are ______________
17
__________________ 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
None of these
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)
19
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
If p is the prime number that (p+2) is also a prime number , then p(p+2)+1 is always ___________________
A prime number
An odd integer
Not a perfect square
A perfect square