Handshake Problem
Handshake Problem
Suppose there are n people in the party. The first person shakes hand with the other (n-1) guests. The second guest shakes hand with the other (n-2) guests. this will continue until the (n-1) th guest shakes hand with the nth guest.
Total number of handshakes is (n-1) + (n-2)... + 3 + 2 + 1.
= ((n-1)(n))/2
For example, 6 people in a party shake hand with other guests. So how many handshakes will be there?
=((6-1)(6))/2
=15.
Profit and loss is the one of major question section in Competitive exams. These formulas will be helpful for your upcoming Exams like PSC, SSC, IBPS and Other Competitive Exams. .
Cost Price(CP) : The Price at which a particular item purchased, is called its Cost Price.
Selling Price (SP): The price at which a particular item is sold, called its Selling Price.
Profit: If Selling Price of an item is more than Cost Price , then vendor is said to have a Profit.
Loss: if Selling Price of an item is less than Cost Price, the vendor said to have a Loss.
Formulas Profit = SP – CP.
Profit % = Profit/(CP)×100.
SP = ((100+Profit% )/100)×CP.
CP = (100/(100+Profit%))×SP.
Loss = CP – SP.
Loss% = Loss/(CP)×100.
SP = ((100-loss%)/100)×CP.
CP = (100/(100-loss%))×SP.
...
1) ഇന്ത്യയിലെത്തിയ വിദേശികൾ അവർ വന്ന ക്രമത്തിൽ = PDEF .
Portagese, Dutch,English, French.
2) വൈറ്റമിനുകൾ.
കൊഴുപ്പിൽ ലയിക്കുന്നവ= ADEK.
ജലത്തിൽ ലയിക്കുന്നവ = BC.
3) കൂടുതൽ States അധികാരപരിധിയിലുള്ള ഹൈകോടതി = ഗുഹാവതി. ഏതൊക്കെ?.
States Code = MAAN ( മിസോറം,അരുണാചൽപ്രദേശ്, അസം,നാഗാലാൻഡ് ).
4) യുദ്ധങ്ങൾ അവസാനിപ്പിച്ച സന്ധികൾ.
കർണാട്ടിക് യുദ്ധങ്ങൾ...
N = the number of terms .
S = the sum of the numbers in the set.
Average = S/N .
For example.
The marks of a student in five subjects are 96, 94, 92, 87, and 81, then what is the average score of the student?.
N = 5.
S = 96 + 94 + 92 + 87 + 81 = 450.
A = 450/5 = 90.
Another type questions .
1). There are 36 boys and 44 girls in a class. The average score of boys is 40 and girls are 35. Then what will be the average mark? .
Total mark of 36 boys = 36 x 40 = 1440.
Total mark of 44 girls = 35 x 44 = 1540.
Total mark of 80 Students = 1440 + 1540 = 2980 .
Average mark of the class = (2980 / 80).
...
