यदि x, y, z स० श्रे० में हों तथा x, y का स० मा० `A_(1)` एवं y , z का स० मा० `A_(2)` हैं, तो सिद्ध करें की `A_(1)` तथा `A_(2)` का स० मा० y है।

If x,y,z are in A.P and A_(1) is the A.M of x and y and A_(2) is the A.M of y and z then A.M of A_(1) and A_(2) is

x,y and z are in A.P. A_(1) is the A.M. of x and y. A_(2) is the A.M of y and z. Prove that the A.M. of A_(1) and A_(2) is y.

A milkman uses three containers for selling milk, their capacities being 40L, 30L and 20L respectively. He fills respectively 87.5%, 80% and 90% of the containers with a mix of milk and water in the ratios, 3:2, 5:1 and 7:2 respectively. What is the ratio of total quantity of milk to that of water carried by him ? एक दूध वाला दूध बेचने के लिए तीन बर्तनों का इस्तेमाल करता है, उनकी धारिता क्रमशः 40 ली०, 30 ली० और 20 ली० है | वह बर्तनों का 87.5%, 80% और 90% भाग दूध और पानी से भरता है जो क्रमशः 3 : 2, 5 : 1 और 7 : 2 के अनुपात में हैं | उसके पास मौजूद दूध और पानी की कुल मात्रा का अनुपात ज्ञात करें |

The area bounded by y^(2) = 4x and x^(2) = 4y is A_(1) and the area bounded by x^(2) = 4y , x = 4 and x-axis is A_(2) . If A_(1) : A_(2) = K : 1 then K is _______

The area bounded by y^(2) = 4x and x^(2) = 4y is A_(1) and the area bounded by x^(2) = 4y , x = 4 and x-axis is A_(2) . If A_(1) : A_(2) = K : 1 then K is _______

If x and y are natural numbers such that x+ y = 2017, then what is the value of (-1)^x + (- 1)^y ? यदि x तथा y प्राकृतिक संख्याएँ इस प्रकार है कि x+y = 2017 है, तो (-1)^x + (- 1)^y का मान क्या है?

If x + y = 52 and x - y = 20, then find the value of x : y. यदि x + y = 52 तथा x - y = 20 है, तो x : y का मान कितना है?

If x,y and z are three numbers such that x+y = 13, y+z = 15 and z+x = 16, then the value of (xy+xz)/(xyz) is : यदि x,y तथा z तीन ऐसी संख्याएँ है कि x+y = 13, y+z = 15 तथा z+x =16 है, तो (xy+xz)/(xyz) का मान ज्ञात करें ।

If x,y,z are in A.P.and A_(1) is the A.M.of x and y and A_(2) is the A.M.of y and z, then prove that the A.M.of A_(1) and A_(2)isy.