Rajasthan Police Constable Model Paper 4

The pattern followed here is:
6 + 1 = 7 and 7 × 10 = 70
2 + 3 = 5 and 5 × 10 = 50
4 + 5 = 9 and 9 × 10 = 90
Same pattern will be followed for 1α4:
1 + 4 = 5 and 5 × 10 = 50
Hence, correct answer is 50.