1.How
many digits are required for numbering the pages of a book containing 191
pages?
a)435 b) 185 c) 465 d) 235
2.How
many strokes on a computer keyboard are needed to type numbers from 1 to 999?
a)2892 b)2600 c)2432 d)2889
3.Find the sum of the natural numbers from 70 to 120?
a)4410 b)4845 c)1280 d)3600
4.The
sum of all natural numbers from 75 to 97 is
a)1978 b)1598 c)1958 d)1798
5.What
is the sum of the squares of the first 20 natural numbers?
a)2870 b)5740 c)17220 d)1435
6.113 + 123 +133 +
...+ 203 =
a)44100 b)41075 c)3025 d)17250
7.Sum of even numbers between 15 and 25 is
a) 70 b) 180 c)
120 d) 100
8.Between
140 and 198, what is the sum of all the odd numbers?
a)5901 b)
4907 c)5302 d) 4901
9.Find
the sum of all the odd numbers starting from 1 and ending up to the greatest
number of three digits.
a) 500 b)2500
c)250000 d)25000
10.Which of the
following is a factor of the sum of the first 25 natural numbers?
a)13 b)12 c)26 d)24
11.If N represents
the product of the first 15 positive integers, which of the following must be
true?
I. N is
an odd number
II. N is a
multiple of 13
III. N is a
multiple of 28
a) I only b)
II only c)IIIonly
d) Both II and III e) All of the above
12.Which of the
following is not a prime number?
a)157 b)197 c)213 d)223
13.The
sum of all those prime numbers which are not greater than 19 is
a)59 b)77 c)41 d)42
14.If x
is a prime number and -1≤
a)4 b)3 c)2 d)5
15. A
set S contains (2N+1) prime numbers where N is a positive integer. If the sum
of the elements of the set is an even number, then one of the elements of the
set must be
a)
11 b)13 c)3 d)2
