MTS 21 25-07-2022 Shift 2


Question 1

Select the number that will come in place of the question mark (?) in the following mathematical statement.
49×57 -41×18 = ?2×3 +1380

निम्न समीकरण मैं प्रश्न चिहन (?) के स्थान पर कौन-सी संख्या आ सकती है?
49×57 -41×18 = ?2×3 +1380

 


Options

A

B

C

D


Solution:

Correct Answer:

C


49 ×\times 57 - 41 ×\times 18 = (?)2 ×\times 3 + 1380 
49 ×\times 19 - 41 ×\times 6 = (?)2 + 460 
(?)2 = 49 ×\times 19 - 246 - 460 
(?)= 49 ×\times 19 - 706
(?)2= 931 - 706 = 225 = (15)
? = 15

49 ×\times 57 - 41 ×\times 18 = (?)2 ×\times 3 + 1380 
49 ×\times 19 - 41 ×\times 6 = (?)2 + 460 
(?)2 = 49 ×\times 19 - 246 - 460 
(?)= 49 ×\times 19 - 706
(?)2= 931 - 706 = 225 = (15)
? = 15

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