Question

The unit digit in the expression (36234) (33512) (39180) – (5429) (25123) (31512) will be


(A) 8 (B) 0 (C) 6 (D) 5

Answer 1

Answer:

The unit digit in the expression (36234) (33512) (39180) – (5429) (25123) (31512) will be 6

Step-by-step explanation:

(36234) (33512) (39180)

as one of the number has digit ending with Zero and if any number multiplied with number ending with zero the resultant number will end up with zero only

(36234) (33512) (39180)  - end with zero     (47575247797440)

(5429) (25123) (31512) =  9 * 3 * 2  so ending with digit 4  (4298008873704)

0 - 4  will result is ending digit of 6      

(47575247797440 - 4298008873704 = 43277238923736)

option C is correct

Answer 2

Answer:

(c)

Step-by-step explanation:

The multiple of number ending with zero is always Zero at once place.

According to question , Multiplying these will give as under result:

Statement 1:

(36234) (33512) (39180) = 47575247797440

Digit at unit place Zero.

Statement 2:

(5429) (25123) (31512) = 4298008873704

Digit at unit place Four.

According to Question, Subtracting Statement 1 and Statement 2:

47575247797440 - 4298008873704 = 43277238923736

Digit at unit place = 6