Number System
9 3/4 + 7 2/17 - 9 1/15 = ?

7 719/1020
7 817/1020
9 719/1020
9 817/1020

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Number System
Radha's present age is three years less than twice her age 12 years ago. Also the respective ratio between Raj's present age and Radha's present age is 4 : 9. What will be Raj's age after 5 years ?

17 years
15 years
16 years
14 years

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Number System
In how many different ways can 7 boys and 3 girls sit in a row such that all the three girls do not sit together ?

3186880
3286880
3086880
3386880

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