definition
Parin Sir > definition
18
Aug
Examples 21 to 25 of Fundamental(Numbers)
(21) What least number must be added and subtract to 3000 to obtain a number exactly divisible by 19 ?
Soln. On dividing 3000 by 19, we get 17 as a remainder.
∴ Number to be added
= ( 19 – 17 )
= 2
&…
18
Aug
Examples 16 to 20 of Fundamental(Numbers)
(16) Find the unit’s digit in the product (5327)153 × (143)72.
Soln. First of all divide the index by 4 and find out its remainder.
( Replace the remainder 4 by 1 and oth…
17
Aug
17
Aug
Examples 1 to 4 of progression
(1) Find 10th term of the A.P. 351, 357, 363, 369, …
Soln. For given A.P., we have : a = 351 and d = 6.
Here, = 6n + 345
17
Aug
17
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17
Aug
Progression
☼ Arithmetic Progression ( A.P.) : The progression of the form a, a + d, a + 2d, a + 3d, . . . is known as an A.P. ( Arithmetic Progression or Arithmetic Sequence )…
17
Aug