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Ask JUNIOR Class 1 Mathematics question free ×

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• JUNIOR×
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# JUNIOR Class 1 Mathematics Free Doubts and Solutions

## Two circles with radii a and b respectively touch each other externally. Let c be the radius of a circle that touches these two circles as well as a common tangent to these two circles. Then ___.   (A) (B) (C) (D) None of these

Asked by Vishwaraj 12th February 2016, 6:01 PM

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## what is the trick to use trignometric identities in proves of trignometric problems????????

Asked by mkcsamu74 23rd July 2015, 9:24 PM

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## ve that BC

Asked by yash.bisht9910 1st June 2015, 6:58 PM

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## (a-b)2            +   (b-c)2               +   (c-a)2            = (b-c)(c-a)           (c-a)(a-b)              (a-b)(b-c)

Asked by Denny Joseph 30th March 2015, 6:26 PM

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## a girl of height 90cm is walking away from the base of a lamp post at a speed of 1.2 m/s . If the lamp is 3.6 m above the ground . Find the length of her shadoe after 4 sec the radius of the wheels of a bus is 70 cm . How many revolution per minute must a wheel make in order to move at a speed of 66 km/h? if -4 is a root of the quadratic equation x2 + px - 4 = 0and the quadratic equation x2 + px + k = 0 has equal roots. the value of k is a cylindrical water tank of diameter 1.4 m and height 2.1m is being fed by a pipe of diameter 3.5cm through which water flows at a rate of 2 m/sec. In how ​much time the tank will be filled

Asked by fasalikasu 25th March 2015, 6:34 PM

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## if x2 +1/x2 =51 then find the value of x3-1/x3

Asked by Denny Joseph 25th March 2015, 5:31 PM