Number System
What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ?

7878
5656
3434
4545

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Number System
The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ?

163
167
160
158

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Number System
The sum of five consecutive odd numbers of set p is 435. What is the sum of five consecutive numbers of another set q. Whose largest number is 45 more than the largest number of set p?

530
730
770
670

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