Solution
If a number is divisible by 9, then the sum of its digits must also be divisible by 9.
Number : 347P
Sum of digits = $$3+4+7+P=(14+P)$$
Now, for above value to be divisible by 9, it should be equal to 18 (next highest multiple of 9)
=> $$14+P=18$$
=> $$P=18-14=4$$
=> Ans - (C)
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