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Number System

Number System
What should come in the place of question mark (?) in the number series given below?

157
158
160
159

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

160

Number System
If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ?

95
103
92
99

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801  Therefore, x = 99

Number System
If one-seventh of a number is 55 then 40% of that number = ?

171
163
154
147

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x ,             Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154

Number System
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

None of these
20
40
30

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Number System
Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number?

210
148
126
248

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126

Number System
The product of two successive numbers is 4556. Which of the following is the larger of the two numbers?

78
67
63
68

ANSWER DOWNLOAD EXAMIANS APP
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