Question

pls answer this question ​

Answer 1

Answer:

candidate answer 126 questions correctly.

Step-by-step explanation:

lets assume,

no of correct answer = x

no of incorrect/unattempted = 180-x

now we know we get +4 for correct answer and -1 for incorrect/unattempted and candidate total score is 450.

so,

4(x)+(-1)(180-x)=450

5x-180=450

5x= 630

x= 630/5= 126

hence, the no of correct answer is 126, and incorrect/unattempted will be 54.

hope you like the explanation. peace.

Answer 2

Answer:

4

$4 \times 180$

answer is 720

now subtract 450 from 720

270 answers were correct