Infosys Maths Puzzle Logical Reasoning Coding Decoding

1+3=2 2+3=10 3+3=30 4+3=68 5+3=??

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Infosys Other Question

the sum of 3rd and 9th term of A.P is 8. find the sum of 1st 11 terms of A.P
a)33 b)22 c)44 d)55
Rajesh can finish 1/5 of his home work in one hour. Seema can finish 3/7 of
her homework in 90 minutes and Ramya can finish 3/4 of her homework in
three and a half hours. If all of them start their home work at 12.00 PM and can
go to play as soon as they all finish their homework. When can they start to
play, if they take a break at 3.30 PM for 30 minutes?