mathematical operation Model Questions & Answers, Practice Test for ssc chsl tier 1 2023
ssc chsl tier 1 2023 SYLLABUS WISE SUBJECTS MCQs
Analogy
Classification Odd Man Out
Series Completion
Coding & Decoding
Blood Relation
Venn Diagrams
Puzzles Test
Mathematical Operation
Seating Arrangement
The following equation is incorrect. Which two signs should be interchanged to correct the equation? 16 ÷ 4 × 8 - 10 + 14 = 12
Answer: (d)
The equations:
16 ÷ 4 × 8 – 10 + 14 = 12
After changing ÷ and ×.
16 × 4 ÷ 8 – 10 + 14 = 12
16 × $4/8$ – 10 + 14 = 12
8 – 10 + 14 = 12
22 – 10 = 12
12 = 12
The following equation is incorrect. Which two signs should be interchanged to correct the equation? 12 – 12 ÷ 25 × 10 + 10 = 25
Answer: (a)
The given equation,
12 – 12 ÷ 25 × 10 + 10 = 25
After changing + and ÷ we get,
12 – 12 + 25 × 10 ÷ 10 = 25
12 – 12 + 25 × 1 = 25
(37 – 12) = 25
25 = 25
In a certain code language, '÷' represents '+', '-' represents ' ×', '+' represents '÷' and ' ×' represents '–'. Find out the answer to the following question. 1 × 16 ÷ 15 – 10 + 6 = ?
Answer: (a)
If ÷ → +, - → ×, +→ ÷, × → -
then, The given expression
= 1 × 16 ÷ 15 – 10 + 6
= 1 – 16 + 15 × 10 ÷ 6
= 1 – 16 + 15 × $10/6$
= 1 – 16 + 25
= 26 – 16 = 10
If "+" means "subtraction", "×" means "division", "÷" means "addition" and "–" means "multiplication", then 154 × 11 + 78 – 5 ÷ 45 = ?
Answer: (c)
If + → - ,× → ÷, ÷ → +, - → ×
then, 154 × 11 + 78 – 5 ÷ 45
= 154 ÷ 11 – 78 × 5 + 45
= 14 – 78 × 5 + 45
= 14 – 390 + 45 = – 390 +59 = – 331
The following equation is incorrect. Which two signs should be interchanged to correct the equation? 12 – 16 × 25 ÷ 80 + 10 = 7
Answer: (d)
The given equation,
12 – 16 × 25 ÷ 80 + 10 = 7
After changing – and + we get,
12 + 16 × 25 ÷ 80 - 10 = 7
12 + 16 × $25/80$ – 10 = 7
12 + 5 – 10 = 7
17 – 10 = 7
7 = 7
ssc chsl tier 1 2023 IMPORTANT QUESTION AND ANSWERS
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Top 200+ Coding and Decoding MCQ Test PDF For SSC CHSL 2023 »
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