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Please check your question .....

Here,  Frist term  = a = 2 Common diff. =  d = 6 - 2 = 4 We know,  tn = a + (n - 1 )d or, 50 = 2 + ( n - 1) 4 or, 48 / 4 = n + 1  or, n = 11. Hence 11 th term is .....

Here, frist trm = a = 10 Common ratio =  20 / 10 = 2. nth term = tn = arn - 1                        = 10 (2)n - 1                 .....

Here, frist term = a = 2 Common difference  = d  = 4 - 2 = 2 We know,  nth term = tn = a + ( n -1 ) d                  = 2 + ( n - 1 ) 2           .....

n mathematics, an arithmetic sequence  (AS) is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 5, 7, 9, 11, 13, 15, . . . is .....

Here, an = 3n + 5 So, a1 = 3 x 1 +5 = 8 a2 = 3 x2 + 5 = 11 a3 = 3 x 3 + 5 = 14 Here, 11 - 8 = 14 - 11= 3 ....Common difference is same.  So given sequence is A.S. Now, 10 th term =  3 x 10 + 5 = .....

Here, frist term = a = 32. Common ratio = r = 8 / 32= 1/4 Sixth term  = t6 = ar5                      = 32 x ( 1 / 4 )5                 .....

Here, frist term = a  = 32 Common ratio =  r  = 16 / 32 = 1/ 2 9th term = ar8               t9 = 32 x (1/2)8 = 32 x  1 / 256            .....

Here, frist  term =  t1 =  a = 2  Third term = t3 = 242 We know,  t3 = ar2 or, 242 = 2 . r2 or, r2 = 121 or, r = 11. So, common ratio is .....

Here, frist term =  a = 3 Common ratio =  r  = 6 / 3 = 2. Last term = l = 768. Sn = ( a - l r ) /  ( 1 - r )       = [ 3 - 768 ] / [ 1 - 3 ]       =  765 / .....

Here,  Frist term =  a  = 5,  Common difference =  d  = 11 - 5 = 6 So, S7 = n/2 {2a + 6d }           = 7/2 { 2 x 5  + 6 x 6 }           =7/2 x 46 = .....

Here,  Frist term =  a = 2 Common difference =  d = 4 - 2  = 2  no.of terms  = 20 We know,  Sn = n / 2 [ 2a + ( n -1 ) d]        = 20 / 2 [ 2 x 2 + 19 x 2 ]      .....

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Here,  1st moth salary = a = $200 Annual incriment =  d = $50 Number of months = n = 10 x 12 = 120 Now , Total salary she earn at the end of 10 yrs = Sn = n / 2 [ 2a + ( n - 1 ) d ]            .....

वक्ता वा लेखकको  उपदेश प्रार्थना , चाहाना आर्शीवाद आदि आदि जनाउने किैयापदको भावलाई .....

Here,  Length = 12m,  Breadth = 8m. i) Ratio of length to breadth = 12m / 8m = 12/ 8 = 3/2 = 3 : 2. ii) Ratio of breadth to length  = 8m / 12m = 2 /3 = .....

Cambrian explosion is .....

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When a raindrop hits soil that is not protected by a cover of vegetation and where there are no roots to bind the soil, it has the impact of a bullet. Soil particles are loosened, washed down the slope of the land and either end up in the valley .....

Erosion is defined as the removal of soil, sediment, regolith, and rock fragments from the landscape. Most landscapes show obvious evidence of erosion. Erosion is responsible for the creation of hills and valleys. It removes sediments from areas .....

Two effect due to tilting of the earth are, i) Change seasons and climate. ii) length of .....

The time taken by the moon to get one complete revolution around the earth in its orbit is known as sidereal month. It is 27 days 7 hrs 43 minutes 11.5 seconds. Synodic month is the time required by the moon to move around the earth from one full .....