The division in (a), (b), and (d) gives a whole number. But in (c), \( 42 \div 8 = 5.25 \), which does not result in a whole number.
Thus, the odd one out is (c) 42 ÷ 8, as the relationship does not match the others.





Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?