Question

if 15+10=VIII ; 8+6 =X ,19+12=X then whats is the value of 9+4

Answer 1

Answer: XI

Step-by-step explanation: (15)^2-(10)^2= 125 (1+2+5= VIII)

8^2-6^2= 28( 2+8= X)

Similarly, 9^2-4^2= 65 (6+5= XI)

Answer 2

Step-by-step explanation:

Given that:if 15+10=VIII ; 8+6 =X ,19+12=X

To find: what is the value of 9+4

Solution:

To find solution of such type of logical questions, one have to understand first the logic behind the given codes.

So,

15+10=VIII

the logic is

$( {15)}^{2} - ( {10)}^{2} \\ \\ = > 225 - 100 \\ \\ = 125 \\ \\ sum \: of \: digits \\ \\ 1 + 2 + 5 = 8 \\ \\ in \: roman \: numerals \\ \\ 8 = VIII$

By the same way

8+6=X

$( {8)}^{2} - ( {6)}^{2} = 64 - 36 = 28 \\ \\ 2 + 8 = 10 \\ \\ 10 = X$

3) 19+12=X

$( {19)}^{2} - ( {12)}^{2} = 361 - 144 \\ \\ = 217 \\ \\ 2 + 1 + 7 = 10 \\ \\ 10 = X$

Thus,Code for

9+4

$( {9)}^{2} - ( {4)}^{2} \\ \\ = 81 - 16 \\ \\ = 65 \\ \\ 6 + 5 = 11 \\ \\ 11 = XI$

Thus,

9+4=XI

Hope it helps you.