Question 1 :
What is the successor of the number 1000906
(A) 1000907 (B) 1000905 (C) 100907
Solution :
Successor of a number, the number just after the given number.
Successor of 1000906 is 1000907.
Question 2 :
Find the sum of 13, 412, 687 and 908
(A) 2020 (B) 2000 (C) 1950
Solution :
Sum of 13, 412, 687 and 908 = 13 + 412 + 687 + 908
= 2020
Question 3 :
The population of a town is 450772. 1 out of every 14 persons is reported to be educated. In all, how many educated persons are there in the town.
(A) 32198 (B) 35000 (C) 14265
Solution :
Total population = 450772
Number of educated persons = 450772/14
= 32198
Hence the number of educated persons is 32198.
Question 4 :
The population of a village is 1500. If 489 are men and 472 are women and the remaining are children. Find the number of children.
(A) 539 (B) 530 (C) 129
Solution :
Number of children
= Total number of people - (Number of men + Number of women)
= 1500 - (489 + 472)
= 1500 - 961
= 539
Hence the number of children are 539.
Question 5 :
Find the cube of -13.
(A) 2197 (B) -2197 (C) 169
Solution :
Cube of -13 = (-13)3
= -2197
Question 6 :
Simplify the following expression
30 - [15 - {6 + (18 - 14)}]
(A) 15 (B) 25 (C) 28
Solution :
= 30 - [15 - {6 + (18 - 14)}]
= 30 - [15 - (6+4)]
= 30 - [15 - 10]
= 30 - 5
= 25
Hence the answer is 25.
Question 7 :
What is the largest 4 digit number?
(A) 4444 (B) 9999 (C) 8542
Solution :
The largest 4 digit number is 9999.
Question 8 :
HCF and LCM of two numbers are 5 and 280 respectively. If one of the number is 35, find the other number.
(A) 20 (B) 30 (C) 40
Solution :
Relationship between HCF and LCM.
HCF x LCM = Product of two numbers
HCF = 5, LCM = 280
One of the number = 35
Let be the unknown number.
5 x 280 = 35 ⋅ x
x = (5 ⋅ 280)/35
x = 40
Hence the answer is 40.
Question 9 :
An office opens at 9:00 am and closes at 5:30 pm with a lunch interval of 30 minutes. What is the ratio of lunch interval to the total period in office.
(A) 1 : 17 (B) 17 : 1 (C) 1 : 15
Solution :
The time difference between 9 : 00 am to 5.30 pm is 8 hours 30 minutes.
8 hours = 8 (60) = 480 seconds
480 + 30 = 510 seconds
Ratio between the lunch interval and total period in office.
= 510 : 30
= 51 : 3
= 17 : 1
Question 10 :
Solve the equation x - 7 = -15
(A) 4 (B) -8 (C) 15
Solution :
x - 7 = -15
x = -15 + 7
x = -8
Hence the answer is -8.
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