Subject
Bank Exam
Topic
Southeast Bank Ltd. - Probationary Officer - 2020 (15-02-2020)
6 people meet for a business lunch, Each person shakes hands once with each other person present . How many handshakes take place ?
6 people meet for a business lunch, Each person shakes hands once with each other person present . How many handshakes take place ?
ক)
15খ)
18গ)
12ঘ)
10Explanation
প্রশ্নে বলা হচ্ছে, ৬ জন ব্যক্তির প্রত্যেকে প্রত্যেকের সাথে হ্যান্ডশেক করলে সেখানে মোট কতগুলো হ্যান্ডশেক হবে ? মোট ব্যক্তি ৬ জন আর হ্যান্ডশেক করবে ২ জন করে । ∴ মোট হ্যান্ডশেক সংখ্যা = 6 C 2 = 6×5×⌊4 / ⌊2×⌊(6-2) = 6×5×⌊4 / 2×1×⌊4 = 15 .Related questions
A Children's gift store sells gift certificates in denominations of 5 . The store sold 'm' 5 certificates worth $93 on a Saturday afternoon. If 'm' and 'n' are natural member's how many different values can 'm' take ?The deadly 'Corona virus outbreak' in January 2020 was started in the Chinese city ofThe headquater of Apple, known as Apple Park, is locked inThe past participle of 'Spoil' isThe past participle of 'Shine' inThe capital of Ukraine isWhich one of the following pairs is similar in relationship of Hiss : Snake ?On 26 January 2020, the US basketball legend _ died in a helicopter crash in California, USA.