Let → a = 2 i ˆ − 3 j ˆ + k ˆ , → b = 3 i ˆ + 2 j ˆ + 5 k ˆ and a vector → c be such that ( → a − → c ) × → b = –18 i ˆ − 3 j ˆ + 12 k ˆ and → a · → c = 3. If → b × → c = → d , then | → a · → d | is equal to :

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15

Let → a = 2 i ˆ − 3 j ˆ + k ˆ , → b = 3 i ˆ + 2 j ˆ + 5 k ˆ and a vector → c be such that ( → a − → c ) × → b = –18 i ˆ − 3 j ˆ + 12 k ˆ and → a · → c = 3. If → b × → c = → d , then | → a · → d | is equal to :

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