The variables x1, x2, x3, ______, x100 are in ascending order of their magnitude, then the median of the variable is ______. ( WBBSE – 2019 )

The variable x1, x2,x3, ………….,x100 are in ascending order of their magnitude, then the median of the variable is ______. Answer: ( x50+x51 )/2 Explanation: Number of variables (x) = 100 ∴ Median = 1/2 [ (x/2)th+(x/2+1)th ] =1/2 [ (100/2)th+(100/2+1)th ] =1/2 [ 50th+51th ] =1/2 ( x50+x51 )

If the bases of two triangles are situated on same line and other vertex of the two triangles are common, then the ratio of the areas of two triangles ______to the ratio of their bases

If the bases of two triangles are situated on same line and other vertex of the two triangles are common, then the ratio of the areas of two triangles ______to the ratio of their bases. Answer: equal Explanation: Area of Δ ABC / Area of ΔBCD={ ( 1 / 2 Read more…

O is the Centre of a Circle and AB a Diameter. ABCD is a Cyclic Quadrilateral. ∠ABC=65°, ∠DAC=40°, then the Measure of ∠BCD is ______. a)75° b)105° c)115° d)80°

O is te centre of a circle and AB a diameter ABCD is a cyclic quadrilateral. ∠ABC=65°, ∠DAC=40°, then the measure of ∠BCD is ______. a)75° b)105° c)115° d)80° Answer : 115° Explaination: Given: ∠ABC=65° ∠DAC=40° ∠BCD= ?? ∵ ∠ACB is angle in a semicircle. ∴ ∠ACB = 90° ∵ Read more…

In a partnership business, the ratio of share of profit of two friends is 1/2 : 1/3, then the ratio of their principal is –

WBBSE – 2019 Solution : Ratio of the principal = Ratio of profit share                                        = 1 / 2 : 1 / 3                                        = ( 6/2 ) : ( 6/3 )                                        = 3 : 2 The required answer is ( b ) 3 : 2