Class 9 Math Test ch 6,12,13,15,20 FM 30

 

Summation k=1 to 9 1/k(k+1)(k+2) Class 9/10 IOM

 ANSWER:  276

Class 10 | Math Trigo, Quadratic, Shares and Dividend, Ratio and Remainder FM 25

 

Assuming the density of air to be 1.295 kg m-3, find the fall in barometric height in mm of Hg at a height of 107 m above the sea level. Take density of mercury = 13.6 × 10³ kg m-3.

 

If sin(pi costheta)=cos(pi sintheta) then find theta