12th ka economics ka subjective question | 12th economics vvi question 2022

10th science ch 12 electricity 2022

The line of regression marks in economics (X) for marks in mathematics (Y) for a class of 50 students is 3y - 5x+180 = 0. Average score in mathematics is 44 and variance of marks in economics is 9/16th , of variance of marks in mathematics. Find the average score in economics and also the coefficient of correlation between marks in economics and mathematics.

The 12th term in the expansion of e^(-3) is

12th English Answer Key 2022 Set-A to J | English Objective Answer Key 2022 Bihar Board

The sum of 5th and 9th term of an A.P. is 72 and the sum of 7th and 12th terms is 97 . Find that

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Find the 12th term from the end of the following arithmetic progression: 3,8,13……….253

Find the 12th term from the end of the following arithmetic progression: 1,4,7,10………..88

Find the 12th term from the end of the following arithmetic progression: 3,5,7,9…..201