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CBSE Class 12 Math 2020 Delhi Set 2 Solved Paper

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Note : Except for the following questions, all the remaining questions have been asked in the previous sets.
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Question : 1
Total: 11
If [
x1
][
10
−20
]=0, then x equals
Solution:  
‌[
x1
][
10
−20
]‌=0
‌
⇒‌[
x−20
]‌=[
00
]
⇒x−2‌=0
⇒‌x‌=2
‌∴‌ Option (d) is correct. ‌‌
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