`PE = 4 m, QE = 4.5 m, PF = 8 m and RF = 9 m.`
Is ` EF |\| QR`? Justify your answer.

E and F are points on the sides PQ and PR respectively of DeltaP Q R . For each of the following cases, state whether EF || QR: (i) PE = 3.9 cm. EQ = 3 cm. PF = 3.6 cm and FR = 2.4 (ii) PE = 4 cm. QE = 4.5 cm. PF = S cm and RF = 9 cm (iii) PQ = 1.28 cm, PR = 2.56 cm, PE = 0.18 cm and PF = 0.36 cm

A and Bare respectively the points on the sides PQ and PR of a triangle PQR such that PQ = 10.5 m PA = 4.5 m, BR= 8 m and PB= 6 m. Is ABabs()QR ? (True/False)

Points E and F respectively lie on sides PQ and PR of DeltaPQR . For condition given below state whether EF||QR PE = 4 cm, QE = 4.5 cm, PF = 8 cm and RF = 9 cm

If 3m = 5m - 8/5 , then m = ?

If 5m + 18 = 8 , then m = _____

Solve : 2m + 5 gt 9 - 4m, m in Q

Is defined on the set quad {1,2,3,4,5} by a*b=L.C.M. of a and b a binary operation? Justify your answer.

What happens to the image distance in the normal human eye when we decrease the distance of an object, say 10 m to 1 m? Justify your answer.