Question 1

# Which of the following pairs of numbers and signs, when their positions are interchanged, will correctly solve the given mathematical equation?$$17 \times 15 + 3 - 11 \div 3 = 45$$

Solution

such type of question are solved by checking the given answers in expression. so let put all given options in expression..

OPTION A..LHS   $$17\times15+3-11\div3$$  now replace 15and11,,,+and$$\times$$

LHS becomes  $$17+11\times3-15\div3$$

now solve it according to bodmas

LHS=$$17+11\times3-5$$

LHS=$$17+33-5$$

LHS=$$50-5$$

LHS=45=RHS

verified