Question

The cost and weight of 4 metal balls are given as follows:

	Ball $1$	Ball $2$	Ball $3$	Ball $4$
Weight (g)	15	17	21	33
Cost ($)	200	234	272	404

All the balls have the same relation between cost and weight except one. Find the ball which follows a different relation than others?

• A. Ball 1
• B. Ball 2
• C. Ball 3
• D. Ball 4

Answer 1

The correct option is D Ball 4

Here, all the balls except Ball 4 follows the same relation as:

Weight $\times$ 12 + 20 = Cost

Ball 1: 15 $\times$ 12 + 20 = 200
Ball 2: 17 $\times$ 12 + 20 = 234
Ball 3: 21 $\times$ 12 + 20 = 272
Ball 4: 33 $\times$ 12 + 20 = 416

It is clearly seen that Ball 4 follows a different relation here.