ACIO Exam

. Find the last two digits of : 153*763*519*717

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ACIO Other Question

Three bells chime at intervals of 48, 60 and 90 minutes respectively. If all the three bells chime together at 10 AM, at what time will all the three chime again that day? There is a 7-digit telephone number with all different digits . If the digit at extreme right and extreme left are 5 and 6 respectively, find how many such telephone numbers are Possible.