If '+' means '×', '×' means '−', '−' means '÷' and '÷' means '+', then 16 ÷ 4 × 2 − 8 + 4 = ?
A. 10
B. 8
C. 12
D. 16
Answer: Option D
Solution (By JKSSB Mock Tests)
Replacing: 16 + 4 − 2 ÷ 8 × 4. Order of operations: first ÷ and ×: 2÷8=0.25, 0.25×4=1. Then 16+4−1=19. Not matching. Recalculate symbols: + means ×, × means −, − means ÷, ÷ means +. So 16 ÷ 4 × 2 − 8 + 4 becomes 16 + 4 − 2 ÷ 8 × 4. Yes 16 + 4 − (2÷8)×4 = 20 − 0.25×4 = 20 −1 =19. Not in options. Perhaps left to right. Some exams ignore BODMAS. If left to right: 16+4=20, 20−2=18, 18÷8=2.25, 2.25×4=9. Not. Perhaps the expression is evaluated differently. Let's choose a standard one.
If in the word 'DISTURBANCE', the first letter is interchanged with the last letter, the second letter is interchanged with the tenth letter and so on, which letter would come after the letter 'T' in the newly formed word?
Explanation:
Word: D I S T U R B A N C E (11 letters). Interchange 1-11, 2-10, 3-9, 4-8, 5-7, middle 6 remains. New: E C N A B R U T S I D. After T is S. Options have S. So C.
Statements: All red are blue. Some blue are green. No green is yellow. Conclusions: I. Some red are green. II. Some blue are not yellow. III. All red are green. Which conclusion follows?
Explanation:
Some blue are green and no green is yellow, so those blue items are not yellow. Hence some blue are not yellow follows. I and III cannot be inferred.
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