GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
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
The prime number which comes just after 43 is:
49
45
47
none of these
2
Number of prime numbers from 1 to 50 are:
18
12
15
20
3
An example for twin primes is:
5, 11
3, 5
11, 17
3, 7
4
Which of the following pairs of number are co-primes?
11, 111
22, 222
12, 36
14, 50
5
Choose the even number from the following numbers.
555, 444, 1221, 3663
1221
3663
444
444, 1221
6
The number which is neither prime nor composite is
0
7
Choose the co-prime numbers from the following pairs.
7 and 63
36 and 25
35 and 21
63 and 81
8
Which of the following pairs are twin primes?
(19, 21)
(29, 31)
(39, 41)
All of these
9
The sum of the digits of a 2 -digit number is 14. If digits are reversed, the new number decreases by 36 the number is _____________.
56
78
95
96
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
Find the sum of the values of the literal (b) in the general form represents for the number 904, 326, 984
Least prime number is ___________________.
13
The smallest odd composite number is ___________
14
Find the sum of the values of the literal (a) in the general form represents for the number 325, 526, 987
19
17
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)
16
If p and q are co-prime numbers then is p2 and q2 are also co-prime?
yes
no
maybe
Number of pairs of twin prime numbers between 1 and 50 are ______________
__________________ 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
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
Find the product of the values of the literal (a) in 325, (b) in 526 and (c) in 987 when the general form is .
32
25
42