Question
If all the persons live according to the English
alphabetical series from top to bottom, then how many persons remain unchanged in their position? Answer the questions based on the information given below. Eight persons viz. A, B, C, D, E, F, G and H are living in an eight-storey building, but not necessarily in the same order. The bottommost floor is numbered as 1 and the floor immediately above it is numbered as 2 and so on. Not more than one person lives on the same floor. The consecutive alphabetically named person doesn’t live on the adjacent floors of the building. E lives on an odd-numbered floor and three floors below F. G lives between E and F. Only two persons live between G and H who doesn’t live on the bottommost floor. D lives on an even-numbered floor. The number of floors above D is the same as the number of floors below A. C lives three floors below B.Solution
) E lives on an odd-numbered floor and three floors below F. 2) G lives between E and F. 3) Only two persons live between G and H who doesn’t live on the bottommost floor. 
4) D lives on an even-numbered floor. 5) The number of floors above D is the same as the number of floors below A. 6) C lives three floors below B. 7) The consecutive alphabetically named person doesn’t live on the adjacent floors of the building. 8) Hence, cases 1 and 3 get eliminated. 
AC and CE are the medians of triangle ABD and ACD respectively. If area of triangle ACE is 15 cm 2 , then find the area of triangle ABD.
B1 is a point on the side AC of ∆ ABC and B1B is joined. line is drawn through A parallel to B1B meeting BC at A1 and another line is drawn through C ...
O and C are the respectively orthocentre and circumcentre of ∆PQR. The line PO is extended which intersect line QR at S. such that, ∠QCR = 140°, �...
Find the area of triangle having sides 7 m, 24 m, and 25 m.
In triangle GHI, a point J lies on side HI such that ∠GJH = ∠GJI. If GH = 50 cm, GI = 30 cm, and HI = 40 cm, find the length of HJ.
In a given Figure, ON ∥ QR and MN ∥ OR.
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 9 cm, BC = 12 cm then what is BD:CD?
PQRS is a cyclic quadrilateral of which PQ is the diameter. Diagonals PR and QS intersect at A. If SQR = 25°, then angle PAS measures
- Two chords PQ and RS intersect each other at point ‘A’ inside the circle. If PQ = 5 cm, RA = 3.6 cm and AQ = 1.8 cm, find the length of RS.
If the points P(2, 3), Q(5, a) and R(6, 7) are co-linear, then find the value of 'a'.
Relevant for Exams:
