Here’s and example of a **SMART MATH** problem for **ARITHMETIC.**

**Problem**

**Problem**

If means ; find the value of 3.124*1.39.

- 2.41324
- 3.24026
- 4.00236
- 2.41026
- 2.313456

**The Usual Method**

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Substituting the values of *‘x’* and *‘y’* according to the data given, we get

i.e.

= 2.41026

**(Ans: 4)**

*Estimated Time to arrive at the answer = 90 seconds as this is a calculation intensive problem.*

**Using Technique**

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Just get to the ‘’ level. Note that the product of these two numbers should be 2+3 = 5 digits after the decimal point. This eliminates option ‘5’.

Also, the product of the last digits is ‘6’ (9 x 4 = 36). Hence, ‘6’ should be the last digit of the answer. This eliminates option ‘1’.

Also, note that 13 x 17 > 200. Hence, the answer should be a number starting with 2.something…

Hence, the answer is option’4’.

**(Ans: 4)**

*Estimated Time to arrive at the answer = 10 seconds*

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