Question
What is the unit digit of (217)413 ×
(819)547 × (414)624 × (342)812?Solution
Power series of 7 i.e unit digit 7 power expansion has 7,9,3 and 1 and it is raised to power 413 i.e 413/4 remainder 1 and so last digit is 7 Power series of 9 i.e unit digit 9 power expansion has 9 and 1 and it is raised to power 547 i.e 547/2 remainder 1 and so last digit is 9 Power series of 4 i.e unit digit 4 power expansion has 4 and 6 and it is raised to power 624 i.e 624/2 remainder 0 and so last digit is 6 Power series of 2 i.e units digit 2 power expansion has 2,4,8 and 6 and it is raised to power 812 i.e 812/4 remainder 0 and so last digit is 6 All the last digits product=7*9*6*6 Â =8
Where is the recently confirmed cave on the moon located?
How many certified assessors will be trained under India’s National Red List Assessment initiative?
The official theme of BRICS 2026 under India’s Chairmanship is:
Which renowned Indian cricketer was appointed as Goodwill Ambassador for VISION 2020 India?
Consider the following statements in regards to Kuno Van Mahotsav
1) Madhya Pradesh organized the first edition of Kuno Van Mahotsav in Dec.
...The RBI revoked the banking licence of Paytm Payments Bank Limited under which section of the Banking Regulation Act, 1949?
With FIDE joining the IWGA, how many members does the association now have?
The government plans to establish how many pulse mills across India under the processing and infrastructure boost initiative?
Which of the following recipients was awarded the Padma Vibhushan posthumously in 2025?
Which company will enhance Norway’s critical financial infrastructure by partnering with BankID BankAxept AS, Norway’s national payment and electron...
Relevant for Exams:
