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Number System

Number System
56.21 +2.36+5.41 —21.4+1.5=?

54.08
64.08
34.08
44.08

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

44.08

Number System
Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number?

240
160
180
140

ANSWER DOWNLOAD EXAMIANS APP

Number System
What should come in place of the question mark (?) in the following number series ? 888 888 444 148 ? 7.4

29
37
33
35

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

888 ÷ 1 = 888888 ÷ 2 = 444444 ÷ 3 = 148148 ÷ 4 = 3737 ÷ 5 = 7.4

Number System
735 chocolates were distributed equally among children in such a way that the number of chocolates received by each child is 60% of the total number of children. How many chocolates did each child rec

14
18
21
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number of children be 'x' Therefore, each child will receiveX x 60/100 = 3x/5 chocolates∴ X x 3x/5 = 735∴ x² x 735x5/3 = 1225∴ x = 1225 = 35∴ Number of chocolates = 3x/5 = 21

Number System
3√103820 x 3√274620 = ?

3065
3035
3045
3055

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055

Number System
An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white ?

92/190
90/190
91/190
89/190

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Total possible outcomes = 20C2 = 20 x 19/1 x 2 = 190Total favourable outcomes = 7C1 x 13C1 = 7 x 13 = 91∴ Required probability = 91/190

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