[" 60.यदि "p:q:r=1:2:4" हो,तो "sqrt(5p^(2)+q^(2)+r^(2))" बराबर होता- "],[[" (a) "5," (b) "2q],[" (c) "5p," (d) "4r]]

If p:q:r=1:2:4,(:thenbackslash sqrt(5p^(2)+q^(2)+r^(2)) is equal to 5 b.2q c.5pd.4r

if p: q :: r , prove that p : r = p^(2): q^(2) .

If p = -2, q = - 1 and r = 3, find the value of (i) p^(2) + q^(2) - r^(2) (ii) 2p^(2) - q^(2) + 3r^(2) (iii) p - q - r (iv) p^(3) + q^(3) + r^(3) + 3 pqr (v) 3p^(2) q + 5pq^(2) + 2 pqr (vi) p^(4) + q^(4) - r^(4)

If p, q, r are in A.P the p^(2) (q + r), q^(2) (r + p), r^(2) (p+q) are in

If p,q,r are in A.P the p^(2)(q+r),q^(2)(r+p),r^(2)(p+q) are in