89250 17850 7140 1428 571.2 ?

89250, 17850, 7140, 1408, 571.2, ?

Compute : (50+0.5xx20)div0.7 A. 8.571 B. 857.1 C. 85.71 D. 72.85

The value of (5.71 xx 5.71 xx 5.71 - 2.79 xx 2.79 xx 2.79 )/( 5.71 xx 5.71 + 5.71 xx 2.79 xx 2.79 + 2.79 ) in simplified form is :

What approximate value should come in place of the question mark (?) in the following questions ? (You are not expected to calculate the exact value) ? (4)/(5) xx (1225)/(1428) xx 9 = ?

Divide : 142.8 div 21

Ram purchased a book in Rs 178.50 and medicines in Rs 248.25. He gave a note of Rs 500. The rest amount is :

Find the two equation of regression line for the given data: n=102, sumx=510, sumy=7140, sumx^(2)=4150, sumy^(2)=740200, sumxy=54900 Also estimate the value of y when x = 7.