Question
How many different nine digit numbers can be formed
from the number 66 55 99 222 by rearranging its digits so that the odd digits occupy even positions only?Solution
Number of even places = 4 Number of even digits = 5 (6,6,2,2,2) Number of odd places = 5 Number of odd digits = 4 (5,5,9,9) Since 5 & 9 are repeated two times odd digits can be arranged in 4!/(2!×2! ) = 6 ways Since 6 is repeated two times & 2 is repeated three times even digits can be arranged in 5!/(2! ×3!) = 10 ways Hence, the required number of ways = 6 × 10 = 60 ways.
UPI volume cap deadline extended till _______.
E - Samadhan Portal will be regulated and monitored by _______ .
Which of the following structures is included in the Musi River Historic Buildings that have been included in the World Monuments Watch list?
Reliance Industries Ltd (RIL) and the _______ have entered into separate partnerships withNvidia to build AI supercomputers and to bring advanced AI cap...
On World Lion Day, Gujarat Chief Minister Bhupendra Patel launched which mobile app to enable the public to report lion movements to the state forest de...
Who chaired the committee that developed India’s Repairability Index (RI) framework in September 2024?
Who is the MD & CEO of the Central Bank of India?
Ayush market with trade interest of more than ₹590 crores generated at the ‘1st SCO Conference & Expo on Traditional Medicine’ in which city?
Why did Italy decide to withdraw from China's Belt and Road Initiative (BRI), and what was the criticism it faced for joining in 2019?:
Who is the current Governor of the Reserve Bank of India?