Find the 15th term of the sequence 20, 15, 10, ........
correct answer:-3
How many terms are there in the AP. 20, 25, 30, ..... , 130?
correct answer:-2
Find the 1st term of an A. P whose 8th and 12th terms are 39 and 59 respectively
correct answer:-2
The sum of two numbers is 15 and their gemetric mean is 20% lower than their arithmetic mean. Find the numbers.
correct answer:-3