pls answer this question❓
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The answer of 12 question =1234
Step-by-step explanation:
Answered by
0
Answer:
100
Step-by-step explanation:
Let the number of correct answers is x
and number of wrong answers is y
Total number of questions answered is 120
so x+y=120
marks given for right answer= 1 = 1x
marks given for wrong answer = -1/2 = -y/2
sum= 1x-y/2=90= marks got to Sanya
2x-y=180
Add x+y/2 and 2x-y
then 3x= 100
3x=300
x=100
So the number of questions answered correctly by Sanya is 100
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