अर्धवार्षिक पेपर कक्षा 12वीं इतिहास 2021 । ardhvaarshik paper class 12th history 6 December 2021।

Find the 24th term of the sequence: 12,10,8,6…..

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Find the 15^(th) term of the series 3 - 6 +9 - 12 + …

In a class of 30 students 12 take needle work, 16 take physics and 18 take history. If all the 30 students take at least one subject and no one takes all three, then the number of students taking 2 subjects is

Find the second term and nth term of an A.P. whose 6th term is 12 and the 8th term is 22.

Determine 2nd term and 5'th term of an A.P. whose 6th term is 12 and 8th term is 22

Find the G.P. whose 2nd term is 12 and 6th term is 27 times the 3rd term.

Sand is pouring from a pipe at the rate of 12c m^3//sdot The falling sand forms a cone on the ground in such a way that the height of the cone is always 1/6th of the radius of the base. How fast does the height of the sand cone increase when the height in 4 cm?

Sand is pouring from a pipe at the rate of 12c m^3//sdot The falling sand forms a cone on the ground in such a way that the height of the cone is always 1/6th of the radius of the base. How fast does the height of the sand cone increase when the height in 4 cm?

The dining hall of a hotel is 75 m . Long 60m broad and 16 m high It has five doors 4m by 3 m each and four windows 3 m by 1.6 m each. Find the cost of: (i) papering its walls at the rate of rupees 12 per m ^(2) (ii) Carpeting its floor at the rate of rupees 25 " per " m^(2)