SRMJEE 2019 Paper with key

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Question : 98 of 140
 
Marks: +1, -0
Consider points A,B,C and D with position vectors 7
→
i
−4
→
j
+7
→
k
,
→
i
−6
→
j
+10
→
k
,−iv−3
→
j
+4
→
k
‌and
‌5
‌
→
i
−jv
+5
→
k
respectively, then ABCD is a
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