alleryਇੱਕ ਟੈਸਟ +5 ਪ੍ਰਤੀ ਸਹੀ ਉੱਤਰ ਅਤੇ −2 ਪ੍ਰਤੀ ਗਲਤ ਜਵਾਬ ਦਿੰਦਾ ਹੈ; 18 ਜਵਾਬਾਂ ਦਾ ਸਕੋਰ 55। ਸਹੀ ਗਿਣਤੀ?
A13
B15
C14
D12
Answer & Solution
Correct answer: A. 13
ਜੇਕਰ c ਜਵਾਬ ਸਹੀ ਹਨ, 5c − 2(18 − c) = 55 ਦਿੰਦਾ ਹੈ 7c = 91 ਅਤੇ c = 13।
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