Under Section 114 of Evidence Act, the court may presume the existence of any fact which it thinks likely to have happened.

Opinion of experts is relevant under Section 45 of Evidence Act.

Section 143 of Indian Evidence Act states that leading questions are generally asked in cross examination.

Section 1 of Indian Evidence Act expressly provides that the act is not applicable to affidavits presented to any court or proceedings before an arbitrator.

All of the above facts are relevant.

Under Section 26 of Indian Evidence Act, confession while in the custody of police officer is not admissible in evidence unless it is made in the immediate presence of Magistrate.

Under Section 114 of Indian Evidence Act, the Court may presume the existence of any fact which it thinks is likely to have happened, regard being had to the common course of natural events, human conduct and public and private business, in their relation to the facts of the particular case. 

Evidence is of two types: oral evidence and documentary evidence.

Dying declaration is based on the maxim 'Nemo moriturus praesumitur mentire' which means 'a man will not meet his maker with a lie in his mouth'.

Admission is defined in the Indian Evidence Act, whereas confession is not defined.

Indian Evidence Act came into force on 1^st September, 1872.

Communications during marriage - Section 122 Confession by accused while in custody of police not to be proved against him - Section 26 Dumb witness - Section 119 Professional communications - Section 126  

Tape recorded conversation is relevant as an evidence on satisfying the voice of the person alleged to be speaking must be identified by the maker of the record or by other who knows it.

Bodh Raj vs. State of J & K - Last seen theory. Ram Narain vs State of UP - Expert Opinion. State of UP vs Raj Narain - Privileged Communication. Ravinder Singh vs State of Haryana - Accomplice Evidence

Section 4 of the Evidence Act defines: 'May presume' — Whenever it is provided by this Act that Court may presume a fact, it may either regard such fact as proved, unless and until it is disapproved or may call for proof of it. 'Shall presume' —Whenever it is directed by this Act that the Court shall presume a fact, it shall regard such fact as proved unless and until it is disapproved. 'Conclusive proof'—When one fact is declared by this Act to be conclusive proof of another, the Court shall on proof of the one fact regard the other as proved and shall not allow evidence to be given for the purpose of disapproving it.