द्रवचालित लिफ्ट में उत्थापक तथा आरोपित बल का सम्बन्ध है `F_2=F_1(A_2/A_1)` यदि `A_2gtA_1` तो

In direct proportion a_1/b_1 = a_2/b_2

If A_1 and A_2 are two AMs between a and b then (2A_1 -A_2) (2A_2 - A_1) =

For any three sets A_1 , A_2 ,A_3 . Let B_1 = A_1 , B_2 = A_2 - A_1 and B_3 = A_3 - A_1 cup A_2 , then which of the following statement is always true ?

Show that P(B)>0 , then P(A_1 cup A_2|B) = P(A_1|B) + P(A_2|B)-P(A_1 cap A_2|B) .

यदि किसी भिन्न का अंश, हर से 2 कम है और यदि हर में 1 जोडा जाए तो यह (1)/(2) हो जाता है तब वह भिन्न होगी ?

If A_1 and A_2 are two A.M.’s between a and b, prove that : (2A_1-A_2)(2A_2-A_1) =ab .

If curves a_1 x^2 + 2h_1 xy + b_1 y^2 - 2g_1 x - 2f_y y + c = 0 and a_2 x^2 - 2h_2xy + (a_2 + a_1 - b_1) y^2 - 2g_2 x - 2f_2 y + c = 0 intersect in four concyclic points A, B, C and D . and H be the point ((g_1+g_2)/(a_1 + a_2), (f_1 + f_2)/(a_1 + a_2)) , then (5HA^2 + 7HB^2 + 8HC^2)/(HD^2) = ..

For any two events A_1 and A_2 , show that P(A_1 cap A_2)lemin{P(A_1),P(A_2)} where min {P(A_1), P(A_2)} is the minimum of P(A_1) and P(A_2) .

If A_1 and A_2 be the two .Ms between two numbers 7 and 1/7 then (2A_1-A_2)(2A_2-A_1)=

For any two events A_1 and A_2 , prove that P(A_1 nn A_2) le min{PA_1),P(A_2)} where min {PA_1),P(A_2)} is the minimum of P(A_1) and P(A_2) .