A) 288
B) 306
C) 360
D) 310
Correct Answer: D
Solution :
[a] The number of four-digit numbers Starting with 5 is equal to \[{{6}^{3}}=216\] [b] Starting with 44 and 55 is equal to \[36\times 2=72\] [c] Starting with 433,434 and 435 is equal to \[6\times 3=18\] [d] Remaining numbers are 4322, 4323, 4324, 4325 is equal to 4 so total numbers are 216 + 72 + 18 + 4 = 310You need to login to perform this action.
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