Self Maths Puzzle Numerical Ability

Q. Average of three numbers are a,b and c is 180. Also, b is 2a and C is 2.4a. What is the new average if a number 'd', which is three fourth of C, is introduced?

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Self Other Question

Q. Given the sequence a, bb, ccc, dddd, eeeee....... and so on, find the 240th term of the sequence?
Q. Find the next term:
375,864,753,648,.......