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Recap|Patterns In Whole Numbers|OMR

Recap|OMR|Patterns In Whole Numbers

The arithmetic mean of 4 numbers is 15. The arithmetic mean of another 6 numbers is 12. What is the arthmetic mean of the combined 10 numbers?

The next two numbers in the number pattern 1, 4, 9, 16, 25 ... are

Find out the number of squares in the given pattern.

The number of ways in which 3 numbers can be selected from first 45 natural numbers such that they are in arithmetic progression,is :

If a, b and c are three positive numbers in an arithmetic progression, then:

Find out the number of triangles in the given pattern.