Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
What will come in the place of '?' in the following equation, if '+' and '-' are interchanged? 23тИТ7├Ч15├╖5+17=?
30
24
27
25
27
Apply BODMAS rule strictly after interchanging the signs: solve Division first, then Multiplication, then Addition/Subtraction.
Apply BODMAS rule strictly after interchanging the signs: solve Division first, then Multiplication, then Addition/Subtraction.
Interchange the symbols
The original equation is 23 - 7 * 15 / 5 + 17 =?. Replacing '-' with '+' and '+' with '-', the new equation becomes 23 + 7 * 15 / 5 - 17 =?.
Apply BODMAS rules
First, perform division: 15 / 5 = 3. The equation becomes 23 + 7 * 3 - 17.
Perform multiplication and arithmetic
Next, perform multiplication: 7 * 3 = 21. The equation becomes 23 + 21 - 17. Finally, 44 - 17 = 27.
A: 30 is incorrect because it does not result from the calculation 23 + 21 - 17; B: 24 is incorrect as the calculated result is 27; D: 25 is incorrect as the arithmetic sequence leads to 27.
C is correct because applying the BODMAS rule (23 + 7 * (15/5) - 17) results in 23 + 21 - 17, which equals 27.
Always perform the division operation first in complex arithmetic sequences to avoid errors, and ensure you rewrite the full expression before calculating.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants