Which two numbers (not digits) and two signs need to be interchanged to make the given equation correct? 240 ÷ 20 - 16 × 14 + 120 = 175
16 and 20, - and +
The correct answer is 16 and 20, - and +.
Perform calculations step-by-step to avoid errors, especially with division and multiplication before addition and subtraction. If fractions or decimals appear during intermediate steps (as in Option 1), carry them through accurately or simplify before proceeding. Keep track of your calculations for each option, perhaps in a table format like the one above, to compare results easily. Practicing different types of equation-based puzzles, including those with various operators and numbers, will improve your speed and accuracy in solving these problems.
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Important Questions from Logical Puzzle
Seven persons P, Q, R, S, T, U and V like different watches namely W1, W2, W3, W4, W5, W6 and W7 (not necessarily in the same order). P and R do not like odd numbered watch. T likes W5. U does not like W2 or W3 or W6 or W7. P likes prime numbered watch. Q likes W4. S likes W2 or W7. Which of the following statement(s) is/are correct ?
I. S likes W7.
II. R likes W2.
III. U likes W1.
IV. V likes W3.
If ‘+’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘–’ and ‘–’ means ‘+’, then
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In a certain code language, ‘LETTER’ is written as ‘ZLZYIO’. What is the code for ‘ACTION’ in that code language?
If A denotes ‘+’, B denotes ‘×’, C denotes ‘-’, and D denotes ‘÷’, then what will come in place of ‘?’ in the following equation?
34 A 15 B 3 C 11 B 2 A (51 D 17) = ?
