Question

If X stands for addition, $\vee$ stands for subtraction, U stands for 'equal to', $\wedge$ stands for division $\sum$ stands for multiplication, $\sigma$ stands for less than. State which expression is true ___________.

• A. $13X8\vee 2U12\wedge 3$
• B. $13\vee 12X9\vee 2\sigma 5\sum 1$
• C. $2\sum 3\sum 4\sigma 51\wedge 3$
• D. $3\sum 2\sum 4U2X7\vee 3$

Answer 1

The correct option is B $13\vee 12X9\vee 2\sigma 5\sum 1$

Symbols X↓+∨↓−U↓=σ↓<∧↓÷∑↓x∂↓>X↓+∨↓−U↓=σ↓<∧↓÷∑↓x∂↓>
option (1) 2×8∨2U12∧32×8∨2U12∧3
3+8−2=12÷33+8−2=12÷3
9=49=4 (this is wrong)
option (2) 13∨12×9∨2σ5∑113∨12×9∨2σ5∑1
13−12+9−2>5×113−12+9−2>5×1
8 > 5 (correct)