CAT Exam

The sum of the first 50 terms common to the Arithmetic Sequence 15, 19, 23..... and the Arithmetic Sequence 14, 19, 24 ... is

Read Solution (Total 1)

the series will be 19,39 .....
S50=50/2(2*19+(50-1)20)
=25450
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CAT Other Question

A gentleman buys every year Bank's cash certificates of value exceeding the last year's purchase by Rs. 300. After 20 years, he finds that the total value of the certificates purchased by him is Rs. 83,000. Find the value of the certificates purchased by him in the 13th year. What is the sum of all the integers which are multiples of 7 from between 200 to 400?