Question

हे गणित UPSC मुख्य परिक्षेतील आहे.फक्त वैभव अगरवाल यानेच सोडवले आहे. सोडवू शकाल?

❓➕❓➕❓=30

1 ,3 ,5 ,7 ,9, 11, 13 ,15

यापैकी अंक वापरा
कोणताही अंक कितीही वेळा वापरा
Best of luck

Answer 1

Mathematically if we are targeting to put only the number into the box then, its impossible. Because for Natural Number system 
Odd + Odd = Even,
Odd + Even = Odd,
Even + Even = Even.
So, Odd + Odd + Odd = Even + Odd = Odd.
Here it is given as 30.

So, go for some trick with minimum tweak

(9, 11, 13) = 6 + 11 + 13 = 30




Otherwise

you required to put bracket in the question

see :

The question mention only to fill the mentioned any number and final value is 30 but u done subtract, if do this way means
15 + 11+ (5-1) = 30

Answer 2

(15-5)+(13-3)+(11-1)=30